有谁知道《lately》的歌词

副词adv. 近来;一向;最近love you lately 我一向爱你http://www.iciba.com/lately%20/这个网站有单词的发音，解释，举例，你可以看看。

1. 什么是lately和recentlyLately和recently都表示最近的意思，常用于英语口语和书面语中，但它们有一些区别。Lately通常指最近过去的时间，通常是几个星期到几个月之间的时间段。而Recently则指更广泛的时间段，可以是最近的一段时间，在数天到数周之内，也可以是数个月或数年的时间段。2. Lately和recently的用法Lately和recently可以在句子中用作副词，修饰动词或形容词，以表示一个行动或状态的“新鲜度”。例如：She has been lately very busy with her work. (她最近一直忙于工作。)Recently, the weather has become colder. (最近天气变冷了。)3. 这两个词的不同例句尽管这两个单词的含义相似，但是在某些情况下却不能互相替代。例如：- LatelyLately通常用来描述与过去几周和几个月相关的事情，例如：I haven"t seen my friend lately. (我最近没有见到我的朋友。)Lately, sales have been increasing. (最近，销售额有所增加。)- RecentlyRecently则适用于更广泛的时间段，可以涵盖过去几天到过去几年，例如：Recently, I"ve been thinking a lot about my future. (最近，我一直在思考我的未来。)I haven"t been to the beach recently. (我最近没有去海滩。)4. 表达方式上的区别除了在使用时指代不同的时间段之外，lately和recently还有一些在表达方式上的差异。例如：Lately这个单词可能会让人联想到一个相对较短的时间段，因此通常具有褒义。使用这个词可以表达一个积极的状态或变化，例如：Lately, I"ve been feeling great. (最近我感觉很好。)Sales have been up lately. (近期销售额呈上升趋势。)相比之下，recently则更加务实。这个单词强调的是一个事件发生的事实，不带任何情感色彩，例如：Recently, the company has hired several new employees. (最近，公司雇佣了几名新员工。)I"ve been working hard at the gym recently. (我最近一直在健身房努力锻炼。)5. 使用lately和recently的注意点虽然Lately和recently的区别较小，但是在使用时还是要注意一些细节。以下是一些需要注意的事项：- 通常情况下，Lately所指的时间比Recently的时间短，应特别注意这一点。- 无论是Lately还是Recently在句子中均为副词，它们不能用于名词或代词。- 如果你要在英语口语中使用Lately和Recently，要注意两者的发音是不同的，Lately发[le?tli]，而Recently发[r?sntli]。6. 案例分析以下是一些使用Lately和Recently的例子：- Lately我感觉身体很健康，每天都能睡好觉。- Recently我很忙，几乎每天都要加班。- Lately，我已经开始更加关注我的健康状况。- Recently，我决定开始学习一门新技能。7. 总结虽然Lately和Recently在实际用法中存在区别，但这两个单词的大致含义非常相似，都表示“最近的”意思。选择哪个单词要视情况而定，但是无论哪个单词，都需要根据上下文和具体时间段来使用。同时，还需要注意这两个单词所表达的情感色彩和发音的区别。

late：迟的,晚(期)的,已故的,新近的，晚,迟,最近,在晚期later：更迟的,更后的，稍后,随后lately：近来,最近

ately的意思是"最近”，用来表示目从较早的时间以来的经常发生的情况。例如：l"vebeen busyately.（我最近很忙。)Newly的意思是"新近”，用来表示过去发生过的，但与当前或近期有关的新事物或情况。例如：1nave a newly purchased car.（我有一两新买的车。）希望我的回答对您有所帮助，祝您生活愉快

The job"s done. =The job is(was) done. 这项工作(这个活儿)完成了。这句话属于被动语态的一般现在时或过去时。而lately是副词最近、近来，这个词是现在完成时的标配，即用到它一定会跟着现在完成时。因此，lately是不可以出现在上面的句子里。

晚的英:[leu026at]美:[leu026at]

i got fat

歌曲名:Lately歌手:Nnenna Freelon专辑:Tales Of WonderMacy Gray - LatelyThat day when I made you cry,didn"t think you"d say goodbyebut I hurt you deep inside and I"m sorry loveHope you can understandwhen I went to the other manSee baby, had to work my planbut you"ve had enoughYeah, shake me loveYou wake me loveI"m dreamin" of ya(I know that we"re)We"re broken up but I"m sure it was love,my loveLately I"ve been...Lately I"ve been coming up just like a palm treePeople surrounding meYeah, I"m popularThey say I"m prettyYou should come back to me (Back to me)Lately, latelyYeah, baby I was a crabDidn"t realise what I hadTook the good and made it badand I"m sorry loveBut I landed on my feet, nowLookie here and you will see, nowI think you"ll like meCheck me outYeah, shake me loveDon"t wake me loveI"m dreamin" of ya(I know that we"re) We"re broken upbut I"m sure it was love, my loveLately I"ve been...Lately I"ve been coming up just like a palm treePeople surrounding meYeah, I"m popularThey say I"m pretty (I"m pretty baby)You should come back to me (Yeah, yeah)Lately, latelyYou have what I needand I know how it seemsbut it"s not that way (Not that way)I was chasing my dreams(I was chasing my dreams)If you only knew (If you only knew)how I felt about you, you"d be running back(Running back), back on my streetLately (Lately) I"ve been coming up (Coming up)just like a palm tree (Palm)People surrounding meYeah, I"m popularThey say I"m prettyYou should come back to me (Yeah)Lately, latelyLately I"ve been coming up just like a palm treePeople surrounding me(Yeah, all now get that I"m popular)Yeah, I"m popularThey say I"m pretty (Yeah, that I"m pretty baby)You should come back to meLately, latelyLately I"ve been coming up(Come to me) just like a palm treePeople surrounding meYeah, I"m popularThey say I"m prettyYou should come back to me (Alright)Lately, latelyhttp://music.baidu.com/song/10306280

late 形容词、副词 “晚”lately副词 “最近的”=recently所以应该是 get up late

就是后面有原型+ ly的

and pale gleams the smile of the sea-beach.

歌曲名:Lately歌手:Lisa Scott-Lee专辑:Lately「LATELY」作词∶Stevie Wonder作曲∶Stevie Wonder歌∶平井坚Lately, I"ve had the strangest feelingWith no vivid reason here to findYet the thought of losing you"s been hanging"round my mindFor more frequently you"re wearing perfumeWith you say no special place to goBut when I ask will you be coming back soonYou don"t know, never knowWell I"m a man of many wishesHope my premonition missesBut what I really feel my eyes won"t let me hide"Cause they always start to cry"Cause this time could mean goodbyeLately I"ve been staring in the mirrorVery slowly picking me apartTrying to tell myself I have no reasonwith your heartJust the other night while you were sleepingI vaguely heard you whisper someone"s nameBut when I ask you of the thoughts you"re keepingYou just say nothing"s changedWell I"m a man of many wishesHope my premonition missesBut what I really feel my eyes won"t let me hide"Cause they always start to cry"Cause this time could mean goodbye, goodbyeOh, I"m a man of many wishesI Hope my premonition missesBut what I really feel my eyes won"t let me hide"Cause they always start to cry"Cause this time could mean goodbye収録：Ken"s Bar II発売日：2009/05/27http://music.baidu.com/song/9661497

《Lately》演唱：Stevie Wonder所属专辑：《Hotter than July》发行时间：1980年歌词：Lately I have had this strangest feeling,with no vivid reasons here to find.Yet the thought of losing you"s been ringing,round my mind...Far more frequently you"re wearing perfume,with you say, "No special place to go"But when I ask will you be coming back soon,you don"t know, never know.Well, I"m a man of many wishes,I hope my premonition misses,but what I really feelmy eyes won"t let me hide,cause they always start to cry.cause this time could mean goodbye.Lately I"ve been staring in the mirror,very slowly picking me apart.Tryin" to tell myself I have no reasonwith your heart.Just the other night while you were sleeping,I vaguely heard you whisper someone"s name.But when I ask you of the thoughts you"re keeping,you just say, nothing"s changed.Well, I"m a man of many wishes,I hope my premonition misses,but what I really feelmy eyes won"t let me hide,cause they always start to cry.cause this time could mean goodbye.Well, I"m a man of many wishes,I hope my premonition misses,but what I really feel my eyes won"t let me hide,cause they always start to cry.cause this time could mean good, goodbye.中文歌词：近来，我有种最奇怪的感觉并无明显的缘由然而，失去了你的想法却在心间萦绕不去你用香水比平时频繁许多却说并不去什么特别的地方。而当我问你是否很快回来时，你回答不出，从未回答好吧，我是个满怀心愿的男人但愿我的预感错了只是对于真正的感受我的眼睛却不让我掩饰因为它们总是开始哭泣因为这次可能意味着再见近来，我凝视镜中很缓慢地将自己一点点撕开试图告诉自己没有理由去询问你的心有天晚上就在你睡觉时我隐约听见你呢喃某个人名而当我问起你心中的想法时，你只是说，一切如常好吧，我是个满怀心愿的男人但愿我的预感错了只是对于真正的感受我的眼睛却不让我掩饰因为它们总是开始哭泣因为这次可能意味着再见

歌曲名:Lately歌手:侧田专辑:侧田 One Good Show 演唱会Day Of Fire - LatelyStealin", down, feelin" I"m burnin" todayDone with everything that I"ve thrown awayWaitin" for the sun up, I"m through the gray with my songI need you,I feed youYou know You knowYou know You know You knowIt"s time to forget about all the thingsYou"ve been thinkin" about latelyLately, it"s been a rollercoaster,These doubts and reasons whyIt"s time to forget about all the liesThat are makin" your heart angryAngry, and all the ones that saidYou would never ever fly,flyCuttin" through, feel the groove of the dayPushin" through the pain til it goes away, yeahMemories cuttin" like a razor bladePushin" through the pain til it fades away, yeahI bleed youYou know You knowYou know You know You knowIt"s time to forget about all the thingsYou"ve been thinkin" about latelyLately, it"s been a rollercoaster,These doubts and reasons whyIt"s time to forget about all the liesThat are makin" your heart angryAngry, and all the ones that saidYou would never ever fly,flyPlease take this heart of mine for a rideThrough the skyPlease take this heart for a rideThrough the skyYeah yeahhIt"s time to forget about all the thingsYou"ve been thinkin" about latelyLately, it"s been a rollercoaster,These doubts and reasons whyIt"s time to forget about all the liesThat are makin" your heart angryAngry, and all the ones that saidYou would never ever fly, flyFlyyyyhttp://music.baidu.com/song/1222679

late 可以作形容词和副词，都表示最后的，晚期lastly 是副词，意思是最后finally 也是副词，表示最后、有着不可更改，起着决定性的意思

get up late 是正确的. late 本身就可以作副词 lately 不久前,近来,最近 它没有 晚 的意思.

　　▲lately和recently都通常与完成时连用。如：　　Have you seen her lately? 你最近见过她吗?　　I haven"t had enough sleep lately. 我近来睡眠不足。　　The Chinese market has opened up recently. 中国市场最近开放了。　　These measures have only been recently introduced. 这些措施是刚刚实施的。　　▲但它们也可连用一般过去时。如：　　They recently put my rent up. 他们最近提高了我的租金。　　A sad accident happened at Madame Blaosky"s lately. 布劳斯基夫人家不久前发生了一件令人伤心的事。　　▲若是连用一般现在时，则通常用于lately，一般不用recently。如：　　He doesn"t like watching TV lately. 他近来不喜欢看电视。　　We used to visit London once a week, but lately we go there twice a week. 我们过去总是每周去一次伦敦，但最近我们每周去两次。　　▲注意：lately和recently都通常不用于将来，如：　　最近我们要去巴黎。　　不说：We will go to Paris lately [recently].　　而说：We will go to Paris soon.

Lately歌曲：Lately歌手：ELLEGARDENLatelyI think I"m doing fineDon"t know what"s going onBut I"m out of itMaybeDesperate long enoughTo get bored of being madBut still it"s out thereYeah still it"s out thereIt"s almost 5:00amDon"t wanna fall asleepI"m finding something she was missingIt"s almost 5:00amAnd I"m still going onI"m finding something to believe inClearlyI"m doing something wrongShe smiles in my photographsI"m out of itMaybeIt means a lot to meIt tells me how to smileAnd it"s always out thereYeah it"s always out thereIt"s almost 5:00amDon"t wanna fall asleepI"m finding something she was missingIt"s almost 5:00amAnd I"m still going onI"m finding something to believe inIt"s almost 5:00amDon"t wanna fall asleepI"m finding something she was missingIt"s almost 5:00amAnd I"m still going onI"m finding something to believe inhttp://music.baidu.com/song/18284342

late1.是形容词，晚的，已故的等意思很多。如：heisalwayslate.2.副词，hecomeslate.lately是副词，近来，不久前。如：hecomesherelately.他最近会来到这里latest1.是late的最高级，最晚的，最新的。如：thisisthelatestnews2.是名词，最晚的，最新的。如：iwantthelatest.later是1.late的比较级，较晚的，更迟的。如：igetupat10,heislaterthanme,at11!2.副词，后来，稍后，一会.如：tryagainlater稍后再打以上不是很详细，不过可以帮助你理解。

lately是副词最近until lately 表示直到最近Be she homesick lately? 她近来老想家吗？来源： dj.iciba.com2.We have been having a few disagreements lately. 我们近来发生了一些争执。来源： dj.iciba.com3.Attendance at meetings seems to have fallen off lately. 参加会议者最近似乎已经减少了。来源： dj.iciba.com4.He has lately set forth a book on prose. 他最近出版一本论散文的著作。来源： dj.iciba.com5.I have not seen anything of him just lately. 近来我连他的影子也没见到过。来源： dj.iciba.com6.I have not seen anything of Old Li lately. 我近来根本没有见到过老李。来源： dj.iciba.com7.That boy has been lazing about too much lately. 那男孩子近来太懒散了。来源： dj.iciba.com8.There have been some pretty unsparing antientertainments just lately. 就在最近，就有一些过度的反传统的娱乐。来源： dj.iciba.com9.The old wound has been playing up again lately. 近来旧伤又发作了。来源： dj.iciba.com10.Their talk lately was only from the teeth outwards. 他们最近的谈话并没有真实的意义。来源： dj.iciba.com

late就是迟到，晚，是形容词，在名词前后latest是形容词最高级，最晚的，最近的，最新的 lately是副词放在动词前后近来，最近

lately在这里的意思是:如今,而今 这里 until lately 是最为一个插入语放在这个句子里面的. 意思是:在美国,直到如今,男子还是依然被人为不能哭泣. I usually see you in the shop lately{最近}!

歌曲名:Lately (Remastered)歌手:Morris Chapman专辑:LatelyDontae - LatelyI"m just sitting back and realizing,all the reasons I made a bad turn.She was getting fed up and slowly drifting,like it"s the love we had crashed and burned.I had excuses for everything,I put your feelings last, I kept my business first.I never knew how much you meant to me,until the last minute it hit me.Now that she"s gone,Deep inside I feel broke.I cant live my life right,So empty inside.Without her, I don"t know if I can make it,maybe shes all I"ve ever needed.I hate that shes gone,no it aint a good feeling.I feel so ???,no I can"t save it."Cause it"s killing me in every way,I can"t explain it.(oh)Maybe I deserve for you to leave.Maybe I should"ve seen how it is between you and me.Maybe, maybe, just maybe, maybe."Cause lately, I been thinking about myself.Lately I been driving you insane, breaking your heart.Lately, lately, just lately, lately.What I don"t get most of all,What makes us stand up, and make love girl?I"m so confused I can"t come in.I feel so bad that ??? doesnt know,I put on a front, and see whats going onand I dont feel right, because I know that it"s wrong.I took advantage of your love and it hurts,Oh it hurts.Now that she"s gone,Deep inside I feel broke.I cant live my life right,So empty inside.Without her, I don"t know if I can make it,maybe shes all I"ve ever needed.I hate that shes gone,no it aint a good feeling.I feel so ??,no one can save me."Cause it"s killing me in every way,I can"t explain it.(Girl)Maybe I deserve for you to leave.Maybe I should"ve seen how it is between you and me.Maybe, maybe, just maybe, maybe."Cause lately, I been thinking about myself.Lately I been driving you insane, breaking your heart.Lately, lately, just lately, lately.Baby, I should have paid more attention;Took up ties that you was giving.But I had too much going on girl, girl."Cause ?????I don"t know what to do,what to do..Maybe I deserve for you to go,I deserve for you to go..Oh,Oh oh ohh, ( Don"t know what I should do )Ohh oh ohh,Yeah yeah yeah.(oh)Maybe I deserve for you to leave.Maybe I should"ve seen how it is between you and me.Maybe, maybe, just maybe, maybe."Cause lately, I been thinking about myself.Lately I been driving you insane, breaking your heart.Lately, lately, just lately, lately.....http://music.baidu.com/song/7407111

lately做副词相当于recently,表示"最近,近来"之意,强调时间点,多用过去时,表示时间长度,多用完成时,但不可用于将来时态中。 lately 意为"近来,最近",相当于 recently ,可置于句首也可置于句末。have you weighed yourself lately? 你最近称过体重吗？Where have you been lately? 前一向你到哪里去？What is he do lately? 他最近干什么？She was here only lately. 她最近才来过这。She has been queer lately. 她最近身体不舒服。Prices have shot up lately. 最近物价暴涨。I haven"t seen him lately. 我最近未见过他。He reads the news lately. 他最近获悉这个消息。TheposterreadsHave you seen them lately? 你最近见过他们吗？Have you seen Kate lately?

歌曲名:Lately歌手:Macy Gray专辑:The SelloutMacy Gray - LatelyThat day when I made you cry,didn"t think you"d say goodbyebut I hurt you deep inside and I"m sorry loveHope you can understandwhen I went to the other manSee baby, had to work my planbut you"ve had enoughYeah, shake me loveYou wake me loveI"m dreamin" of ya(I know that we"re)We"re broken up but I"m sure it was love,my loveLately I"ve been...Lately I"ve been coming up just like a palm treePeople surrounding meYeah, I"m popularThey say I"m prettyYou should come back to me (Back to me)Lately, latelyYeah, baby I was a crabDidn"t realise what I hadTook the good and made it badand I"m sorry loveBut I landed on my feet, nowLookie here and you will see, nowI think you"ll like meCheck me outYeah, shake me loveDon"t wake me loveI"m dreamin" of ya(I know that we"re) We"re broken upbut I"m sure it was love, my loveLately I"ve been...Lately I"ve been coming up just like a palm treePeople surrounding meYeah, I"m popularThey say I"m pretty (I"m pretty baby)You should come back to me (Yeah, yeah)Lately, latelyYou have what I needand I know how it seemsbut it"s not that way (Not that way)I was chasing my dreams(I was chasing my dreams)If you only knew (If you only knew)how I felt about you, you"d be running back(Running back), back on my streetLately (Lately) I"ve been coming up (Coming up)just like a palm tree (Palm)People surrounding meYeah, I"m popularThey say I"m prettyYou should come back to me (Yeah)Lately, latelyLately I"ve been coming up just like a palm treePeople surrounding me(Yeah, all now get that I"m popular)Yeah, I"m popularThey say I"m pretty (Yeah, that I"m pretty baby)You should come back to meLately, latelyLately I"ve been coming up(Come to me) just like a palm treePeople surrounding meYeah, I"m popularThey say I"m prettyYou should come back to me (Alright)Lately, latelyhttp://music.baidu.com/song/7390723

歌曲名:Lately歌手:Nitin Sawhney专辑:All Mixed UpMacy Gray - LatelyThat day when I made you cry,didn"t think you"d say goodbyebut I hurt you deep inside and I"m sorry loveHope you can understandwhen I went to the other manSee baby, had to work my planbut you"ve had enoughYeah, shake me loveYou wake me loveI"m dreamin" of ya(I know that we"re)We"re broken up but I"m sure it was love,my loveLately I"ve been...Lately I"ve been coming up just like a palm treePeople surrounding meYeah, I"m popularThey say I"m prettyYou should come back to me (Back to me)Lately, latelyYeah, baby I was a crabDidn"t realise what I hadTook the good and made it badand I"m sorry loveBut I landed on my feet, nowLookie here and you will see, nowI think you"ll like meCheck me outYeah, shake me loveDon"t wake me loveI"m dreamin" of ya(I know that we"re) We"re broken upbut I"m sure it was love, my loveLately I"ve been...Lately I"ve been coming up just like a palm treePeople surrounding meYeah, I"m popularThey say I"m pretty (I"m pretty baby)You should come back to me (Yeah, yeah)Lately, latelyYou have what I needand I know how it seemsbut it"s not that way (Not that way)I was chasing my dreams(I was chasing my dreams)If you only knew (If you only knew)how I felt about you, you"d be running back(Running back), back on my streetLately (Lately) I"ve been coming up (Coming up)just like a palm tree (Palm)People surrounding meYeah, I"m popularThey say I"m prettyYou should come back to me (Yeah)Lately, latelyLately I"ve been coming up just like a palm treePeople surrounding me(Yeah, all now get that I"m popular)Yeah, I"m popularThey say I"m pretty (Yeah, that I"m pretty baby)You should come back to meLately, latelyLately I"ve been coming up(Come to me) just like a palm treePeople surrounding meYeah, I"m popularThey say I"m prettyYou should come back to me (Alright)Lately, latelyhttp://music.baidu.com/song/10232650

“late”和“lately”的区别是：late有形容词和副词词性，而lately只有副词词性。 late adj. 晚的；迟的；已故的；最近的 adv. 晚；迟；最近；在晚期 lately adv. 近来，不久前 扩展资料 　　Better late than never. 　　迟做总比不做的好。 　　I was shut out for being five minutes late. 　　我就迟到了五分钟，便被关在了门外。 　　She radiotelephoned her mother to say she would be late. 　　她给母亲打无线电话说她要晚到。 　　I fear I am late. 　　我恐怕要迟到了。 　　Look! It"s late. Mother will grumble again. 　　你瞧，这么晚了，妈妈又该唠叨了! 　　The late dinner disgruntled my father. 　　晚饭太晚让我父亲气恼了。

“”近来”在英语中可以用“recently”、“lately”、“in recent times”、“in the recent past”等表达。这些词汇都可以用来描述最近的时间段，表示最近的事情或者情况。例如：“Recently”可以用来描述最近的时间段，通常指过去的几天、几周或者几个月。例如：“I haven"t seen him recently.”（我最近没见过他。）“Lately”可以用来描述最近的时间段，通常指过去的几周或者几个月。例如：“I"ve been feeling tired lately.”（我最近感觉很累。）“In recent times”可以用来描述最近的时间段，通常指过去的几年或者几十年。例如：“In recent times, there has been a lot of progress in the field of medicine.”（最近几十年来，医学领域取得了很多进展。）“In the recent past”可以用来描述最近的时间段，通常指过去的几个月或者几年。例如：“In the recent past, there have been a lot of changes in the company.”（最近几个月来，公司发生了很多变化。）

歌曲名:Lately歌手:Stevie Wonder专辑:Song Review A Greatest Hits CollectionLatelyBy Stevie WonderLately I have had this strangest feeling,with no vivid reasons here to find.Yet the thought of losing you"s been ringinground my mind...Far more frequently you"re wearing perfume,with you say, "No special place to go"But when I ask will you be coming back soon,you don"t know, never know.Well, I"m a man of many wishes,I hope my premonition misses,but what I really feelmy eyes won"t let me hide,cause they always start to cry.cause this time could mean goodbye.Lately I"ve been staring in the mirror,very slowly picking me apart.Tryin" to tell myself I have no reasonwith your heart.Just the other night while you were sleeping,I vaguely heard you whisper someone"s name.But when I ask you of the thoughts you"re keeping,you just say, nothing"s changed.Well, I"m a man of many wishes,I hope my premonition misses,but what I really feelmy eyes won"t let me hide,cause they always start to cry.cause this time could mean goodbye.Well, I"m a man of many wishes,I hope my premonition misses,but what I really feelmy eyes won"t let me hide,cause they always start to cry.cause this time could mean good, goodbye.http://music.baidu.com/song/8284544

歌曲名:Lately (Turn Off The Stars Album Version)歌手:Turn Off The Stars专辑:Turn Off The StarsDontae - LatelyI"m just sitting back and realizing,all the reasons I made a bad turn.She was getting fed up and slowly drifting,like it"s the love we had crashed and burned.I had excuses for everything,I put your feelings last, I kept my business first.I never knew how much you meant to me,until the last minute it hit me.Now that she"s gone,Deep inside I feel broke.I cant live my life right,So empty inside.Without her, I don"t know if I can make it,maybe shes all I"ve ever needed.I hate that shes gone,no it aint a good feeling.I feel so ???,no I can"t save it."Cause it"s killing me in every way,I can"t explain it.(oh)Maybe I deserve for you to leave.Maybe I should"ve seen how it is between you and me.Maybe, maybe, just maybe, maybe."Cause lately, I been thinking about myself.Lately I been driving you insane, breaking your heart.Lately, lately, just lately, lately.What I don"t get most of all,What makes us stand up, and make love girl?I"m so confused I can"t come in.I feel so bad that ??? doesnt know,I put on a front, and see whats going onand I dont feel right, because I know that it"s wrong.I took advantage of your love and it hurts,Oh it hurts.Now that she"s gone,Deep inside I feel broke.I cant live my life right,So empty inside.Without her, I don"t know if I can make it,maybe shes all I"ve ever needed.I hate that shes gone,no it aint a good feeling.I feel so ??,no one can save me."Cause it"s killing me in every way,I can"t explain it.(Girl)Maybe I deserve for you to leave.Maybe I should"ve seen how it is between you and me.Maybe, maybe, just maybe, maybe."Cause lately, I been thinking about myself.Lately I been driving you insane, breaking your heart.Lately, lately, just lately, lately.Baby, I should have paid more attention;Took up ties that you was giving.But I had too much going on girl, girl."Cause ?????I don"t know what to do,what to do..Maybe I deserve for you to go,I deserve for you to go..Oh,Oh oh ohh, ( Don"t know what I should do )Ohh oh ohh,Yeah yeah yeah.(oh)Maybe I deserve for you to leave.Maybe I should"ve seen how it is between you and me.Maybe, maybe, just maybe, maybe."Cause lately, I been thinking about myself.Lately I been driving you insane, breaking your heart.Lately, lately, just lately, lately.....http://music.baidu.com/song/2824202

歌曲名:Lately歌手:Kenny Lattimore专辑:Weekend「LATELY」作词∶STEVIE WONDER作曲∶STEVIE WONDER歌∶福原美穂Lately I have had this strangest feelingwith no vivid reason here to find.Yet the thought of losing you"s been hanging "round my mind.Far more frequently you"re wearing perfumewith, you say, no special place to go.But when I ask will you be coming back soonyou don"t know, never know.Well, I"m a man of many wishes,hope my premonition misses,but what I really feel,my eyes won"t let me hide,"cause they always start to cry."cause this time could mean goodbye.Lately I"ve been staring in the mirror,Very slowly picking me apart.Trying to tell myself I have no reasonWith your heart.Just the other night while you were sleeping,I vaguely heard you whisper someone"s name.But when I ask you of the thoughts you"re keeping,You just say nothing"s changedWell, I"m a man of many wishes,hope my premonition misses,but what I really feel,my eyes won"t let me hide,"cause they always start to cry."cause this time could mean goodbye.【 おわり 】http://music.baidu.com/song/8011571

The job"s done. =The job is(was) done. 这项工作(这个活儿)完成了。这句话属于被动语态的一般现在时或过去时。而lately是副词最近、近来，这个词是现在完成时的标配，即用到它一定会跟着现在完成时。因此，lately是不可以出现在上面的句子里。

歌曲名:Lately歌手:Stevie Wonder专辑:The Definitive CollectionLatelyBy Stevie WonderLately I have had this strangest feeling,with no vivid reasons here to find.Yet the thought of losing you"s been ringinground my mind...Far more frequently you"re wearing perfume,with you say, "No special place to go"But when I ask will you be coming back soon,you don"t know, never know.Well, I"m a man of many wishes,I hope my premonition misses,but what I really feelmy eyes won"t let me hide,cause they always start to cry.cause this time could mean goodbye.Lately I"ve been staring in the mirror,very slowly picking me apart.Tryin" to tell myself I have no reasonwith your heart.Just the other night while you were sleeping,I vaguely heard you whisper someone"s name.But when I ask you of the thoughts you"re keeping,you just say, nothing"s changed.Well, I"m a man of many wishes,I hope my premonition misses,but what I really feelmy eyes won"t let me hide,cause they always start to cry.cause this time could mean goodbye.Well, I"m a man of many wishes,I hope my premonition misses,but what I really feelmy eyes won"t let me hide,cause they always start to cry.cause this time could mean good, goodbye.http://music.baidu.com/song/7563278

Lately歌曲：Lately歌手：ELLEGARDENLatelyI think I"m doing fineDon"t know what"s going onBut I"m out of itMaybeDesperate long enoughTo get bored of being madBut still it"s out thereYeah still it"s out thereIt"s almost 5:00amDon"t wanna fall asleepI"m finding something she was missingIt"s almost 5:00amAnd I"m still going onI"m finding something to believe inClearlyI"m doing something wrongShe smiles in my photographsI"m out of itMaybeIt means a lot to meIt tells me how to smileAnd it"s always out thereYeah it"s always out thereIt"s almost 5:00amDon"t wanna fall asleepI"m finding something she was missingIt"s almost 5:00amAnd I"m still going onI"m finding something to believe inIt"s almost 5:00amDon"t wanna fall asleepI"m finding something she was missingIt"s almost 5:00amAnd I"m still going onI"m finding something to believe inhttp://music.baidu.com/song/15297607

early既是形容词也是副词，late是形容词。常见词组有belateforschool。lately是副词。early的意思是早的，而late和lately的意思正好和early相反，意为晚的。

歌曲名:Lately歌手:Laura Fygi专辑:LiveVashti Bunyan - Lately猫咪回来吧，狗狗一直在等你never was much given to prayerbut lately I"m pleading with the airto keep you safe from harm my dearsthe only things that you should keep in rowsare your perfect teeth - and the rest you knowits own sweet way will always go2009.04.26 7猫咪回来吧，狗狗一直在等你add your footsteps to the wearfor a tiny deny in every stairwill let them know that you"ve been there2009.04.26 7猫咪回来吧，狗狗一直在等你http://music.baidu.com/song/13681048

late1.是形容词，晚的，已故的等意思很多。如：He is always late.2.副词，He comes late.lately是副词，近来，不久前。如：He comes here lately. 他最近会来到这里latest1.是late的最高级，最晚的，最新的。如：This is the latest news2.是名词，最晚的，最新的。如：I want the latest.later是1.late的比较级，较晚的，更迟的。如：I get up at 10, he is later than me, at 11!2.副词，后来，稍后，一会. 如：Try again later 稍后再打以上不是很详细，不过可以帮助你理解。

有时能

late lately是指，近来，

【答案】：D题意：你近来和她谈了吗? 句中lately意为：近来，不久前。 A项lastly意为：最后，终于；例句：Lastly--remember to praise your child for a job well done．最后一点，记得要赞美你的孩子工作做得好。 B项finally意为：最后，终于；例句：After years of hard work，his efforts finally bore fruit．经过多年艰苦劳动之后，他的努力终于取得了成果。 C项shortly意为：立刻，简短地，唐突地；例句：I hope to announce the winner shortly．我希望马上宣布胜利者的名字。 D项recently意为：最近，新近；例句：The weather has been very snowy recently．近来天气多雪。故本题选D。

recently的读音是：英["ri_sntli]。recently的意思是adv.最近。recently【近义词】lately最近。一、详尽释义adv.(副词)最近近来新近不久前二、双解释义adv.(副词)最近,近来notlongago;lately三、网络解释1.recently的解释1.最近,近来：immediately立刻;马上|recently最近;近来|knowof知道;知晓2.最近的：Reboot重新启动|recently最近的|Reprint再印3.recently什么意思3.新近：101.inthenearfuture最近,不久|102.recently新近|103.lately近来四、例句Herbookshavegainedpopularityrecently.她的书近来大受欢迎。Iguessfromhisredeyesthathehasbeenworkingtoohardrecently.我从他红红的眼睛猜想,他准是最近工作太辛苦了。Wehavetwentybranchesabroad,andwe"verecentlyopenedanewoneinBangkok.我们在海外有二十家分公司,最近在曼谷新开了一家。五、词汇搭配untilrecently直到最近leastrecentlyusedalgorithm最近使用的算法...recentlyusedfilelist最近使用文件清单...mostrecently最近六、情景对话伤心A：Whyareyousoglum?你怎么这么忧伤呀?B：Mygirlfriendrecentlybrokemyheart.我的女朋友最近伤了我的心。电影演员A：Who"syourfavoriteactor?你最喜欢哪位演员？B：TomCruise,ofcourse!当然是汤姆克鲁兹了。A：You"vegottobekiddingme!He"shorrible!不是开玩笑吧，他很讨厌。recentlyB：Hemaybeastrangepersoninreallife,buthe"satalentedactor.也许在现实生活中，他是个怪人，但他是个天才演员。A：Heusedtobe.HewasgoodinRainMan,JerryMcGuire,andCocktail.Butthefilmshe"sdonerecentlyaren"tworthseeing.他过去是这样。他在《雨人》《征服情海》《花心情圣》中都有上佳表演。但他最近的片子却不值得一看。B：Doyoumeanthatyoudidn"tlikeMissionImpossibleIII?你的意思是你不喜欢看《碟中谍3》吗？A：That"sexactlywhatImean.Iactuallyleftthetheaterhalfwaythroughthefilm!就是这个意思，这场电影我只看了一半就离开了电影院。B：Who"syourfavoriteactor?你最喜欢哪位演员？recently什么意思A：IlikeJohnCusack.我喜欢约翰库萨克。recently的意思B：What"syourfavoriteJohnCusack"sfilm?你最喜欢他演的哪部电影？A：Ilikeoneofhisolderones,SayAnything.Haveyouseenit?我喜欢他演的一部老电影《情到深处》。你看过吗？B：Sure,that"sagoodfilm.当然，这是部不错的电影。A：Somepeoplesaythathealwaysplaysthesamerole.Doyouthinkthatmakeshimabadactor?一些人说他总是演相同的角色，你觉得这有损他的名声吗？B：Notnecessarily.Maybehejustknowswhathedoeswellandstickswiththat.那倒不会，也许是因为他知道自己擅长演哪类角色才专注于此。A：Regardless,Ithinkhe"sgreat.不管怎样，我都觉得他是个好演员。七、词义辨析adv.(副词)recently,late,lately,oflate这是一组同根词,都表示时间的“迟”“晚”“近”。其区别是：late的意思是“迟”“晚”,反义词是early;lately的意思是“不久前”“最近”,即notlongago;oflate的意思是“最近以来”,强调时间持续的过程;recently的意思是“最近”“近来”,比lately和oflate更加庄重。例如:Wewenttobedlate.我们很晚才上床睡觉。Haveyoubeentherelately?你近来到那里去过吗?Hehasbeenbehavingstrangelyoflate.他近来的行为一直很古怪。Ihaveseenhimquiterecently.我最近见过他。recently的相关近义词lately、freshly、newly、onlyjust、inrecenttimes、amomentago、notlongago、justnow、late、latterly、oflate、fresh、newrecently的相关临近词recent、recentwork、recentdate、recentsoil、recentpast、recentnews、recenttimes、recentrifuge、recentChina、recentmodel、recentweeks

1,late副词&形容词意为；晚的，迟。2，later是late的比较级意为；较迟，较晚。3，latest是late的最高级意为；最迟最近最新。4，latter是形容词意为；后者或后者的后面的（两者之间的后者）。5，lately是副词意为；最近近来和recently相同，常用于现在完成时态

lately的形容词是:late

制冷剂在蒸发器中吸收被冷却物体的热量，并将其蒸发成蒸汽。压缩机不断将产生的蒸汽从蒸发器中抽出并压缩。压缩后的高温高压蒸汽送入冷凝器后，向冷却介质(如水和空气)放热，冷凝成高压液体。经过节流机构减压后，进入蒸发器再次汽化，吸收被冷却物体的热量，以此类推。制热时制冷剂通过四通阀改变流向，与制冷时正好相反。制冷剂首先经过蒸发器，然后返回冷凝器，最后返回压缩机。

顾名思义

闭式循环柴油机（CCD/AIP）除了进、排气系统与普通柴油机不同外，其工作原理与目前常规动力潜艇所使用的普通柴油机是一样的。其工作原理是：用潜艇自带的氧气代替空气中的氧，将废气中的二氧化碳经过冷却和吸收后排到艇外，部分二氧化碳作为工质参加循环工作；同时用氢气取代空气中的氮气，改善循环气体的燃烧质量。其具体工作流程是：将氧气和氢气按一定比例混合成相当于空气成分的气体输入到柴油机的气缸中，然后柴油与氧气发生燃烧反应，产生的热能推动活塞运动进而带动曲轴运转，产生机械能。燃烧后的废气从柴油机排出，温度大约在350-400℃ 之间，主要成分是二氧化碳、水蒸气、氩气和部分氧气。这些废气经过喷淋冷却器被冷却到100℃左右，其中的水蒸气被冷却成水，剩余废气进入一个吸收器。二氧化碳与吸收器喷淋的海水混合并被吸收，由海水管理系统排出艇外。这套系统与柴油机的工作深度、潜艇下潜深度均无关系。部分经过处理的废气补充氧气和氢气后，再进入柴油机参加循环工作，整个过程均使柴油机在闭式循环的工况下工作，可由一台中央计算机控制并管理。技术实现的难点和重点　其一，是将废气中的水蒸气和二氧化碳排出是实现闭式循环的关键所在。其中水蒸气可以通过冷却成水加以解决，但是二氧化碳的吸收排除却是难中之难，主要方法是碱溶液吸收法、再生吸收剂吸收法和海水溶解法，其中最好的应是海水溶解法，原料取之不竭，用之方便，实现难度较小。其二，是使柴油机在使用循环气体的情况下能保证足够的燃烧质量，产生足够大的功率。虽然循环气体中的二氧化碳经过吸收排除，但是整个循环气体中二氧化碳的浓度依然很高，势必影响柴油机的效率，因此通过加入少量氩气来克服。主要的技术优点　柴油机技术成熟，性能比较可靠，寿命长，目前此AIP系统所用柴油机可以是标准的潜艇用柴油机，制造和装配技术非常成熟，工作寿命要比其他AIP系统的主机时间长；燃料可以通用，此 AIP 系统所用柴油与普通常规潜艇所用的一样，可广泛采购，不存在后勤供应问题；随时可以在闭式循环和开式循环两种工况下进行自由转换，因为该系统所用柴油机与普通柴油机一样，所以可以进行自由转换，增加潜艇使用的灵活性；由于可以使用大量成熟技术，且水上、水下均可使用，耗油率较低，维修费用相对较低，因此是AIP系统中最经济的一种形式；工作不受潜艇下潜深度影响。存在的缺点和不足　工作效率低、氧气消耗量大、排出的热量多，按13000海里的续航能力计算，一艘209型潜艇采用燃料电池仅需携带15吨左右的液氧，而采用闭式循环柴油机、则需30吨左右的液氧；产生的噪声大，闭式循环柴油机采用的是普通柴油机，系统的运动部件较多，工作过程中机械运动产生的噪声较大，虽然可以采取降噪技术将噪声降低到安静航行时的水平，但是总体上比采用燃料电池噪声要大；系统输出功率受到限制，因为受到潜艇的噪声控制指标的限制，一般要求每台普通柴油机的输出功率≤500千瓦，因此闭式循环柴油机的输出功率很难再增加。目前德国、荷兰、意大利和英国都在积极开发研制此类AIP系统。1993年，德国在退役的205级潜艇U-1号上成功试验了250千瓦的闭式循环柴油机系统，并将眼光投向大量出口国外的209型潜艇的改装上，拟用一个附加耐压舱段来安装AIP系统，以插入方式加到209潜艇中，这样可使潜艇水下最高航速不变，水下续航时间增加4-5倍，水下4.5节航速可连续航行386小时，续航力接近1800海里。荷兰和意大利也先后成功试验了闭式循环柴油机系统，准备用于对现役潜艇进行改装或用于新建的常规动力潜艇。斯特林发动机系统斯特林发动机（SE/AIP）系统与闭式循环柴油机系统大致相同，最主要的不同就是发动机。SE/AIP系统使用的是热气机，而CCD/AIP系统使用的是闭式循环柴油机。热气机的构想是英国科学家罗伯特·斯特林于1816年率先提出来的，它是一种由外部热源加热，并将热能转换为机械能的热机，其循环是一种闭式、采用定容下回热的气体循环，简称斯特林循环，其具体工作原理是：斯特林发动机的活塞上室为热室，它与另一活塞的下室相连，四个缸相互连接在一起，具体的是1号缸上部的热室与2号缸下部的冷室相连，2号缸上部的热室与3号缸下部的冷室相连，3号缸上部的热室与4号缸下部的冷室相连，4号缸上部的热室与1号缸下部的冷室相连，互相差90°角。它们使工作气体在热室和冷室之间来回移动，使活塞运动并带动曲柄转动。斯特林发动机主要是在水下续航状态下工作，与蓄电池并联，向推进电机、全艇辅机及其他用电设备供电。技术实现的难点和重点　主要在于斯特林发动机的水下燃烧系统，因为该系统所使用的氧化剂是纯氧，燃烧方式为燃气再循环，并且是在高于周围海水压力的高压情况下进行燃烧。主要技术优点　机械噪声与振动较小。因为斯特林发动机是一种从外部对内部气体工质连续加热使之做功的活塞式往复发动机，燃烧过程中没有柴油机的爆燃现象，燃烧过程平稳，因此发动机的噪声与振动较小，但是有些斯特林发动机的部件依然采用往复式运动机械，所以在装备潜艇时仍要加装双层隔振系统以减小水下噪声。废气排放方便，当热气机的燃烧压力为22公斤/厘米2时，废气水下排放不需要闭式循环柴油机系统的庞大水管理系统，在潜深200米内可以自主排放，即使增加潜深也只需要小型压缩机协助。当燃烧压力小于20公斤/厘米2时，废气水下自主排放的深度要相应减小。这种发动机的废气排放深度与燃烧压力有关，这也是技术实现的一个难点。缺点和不足　功率较低，斯特林发动机由于其自身固有的低功率密度的特点，因而决定了整个AIP系统的功率密度小于CCD/AIP系统。如果要加大功率，需要配几台发动机，但这又影响到整个潜艇的布局与使用，实现功率突破难度较大；燃油消耗量较大，目前要高于普通柴油机。当前，在SE/AIP系统较有建树的国家是瑞典。瑞典考库姆公司从上世纪60年代末就开始斯特林发动机的研制工作，目前已经成功研制出71千瓦的 V4-275R 型斯特林发动机，装备于1995年2月2日下水的“哥特兰”号潜艇，并使之成为世界上第一艘装备SE/AIP系统的常规潜艇，这也标志着斯特林发动机进入了实用阶段。近年来，日本也从瑞典引进了斯特林发动机的建造技术，用于装备或改装海上自卫队潜艇。 闭式循环汽轮机系统（MESMA/IP）系统主要由4个分系统构成：液氧储存罐、燃料储存罐及一、二回路系统。其中燃料通常选择乙醇，存放在储存罐中的橡胶袋中；一回路系统包括高压燃烧室、热交换机、冷凝器；二回路系统包括蒸汽发生器、蒸汽轮机、冷凝器。具体工作原理及过程：将储存在绝热罐中的低温液氧送到加热器中加温呈气态，乙醇和气态氧在高压燃烧室里燃烧，燃气通过蒸汽发生器后大部分被冷却，这些经冷却的燃气重新回到燃烧室，用于冷却烟道壁，调节燃烧壁壁温，使其保持在1000℃以下，同时稀释乙醇/氧气的混合气体，使其燃烧温度保持在700℃的最佳状态。一小部分未经冷却的燃气有些直接排出艇外，有些以液态方式储存在艇内。水在蒸汽发生器吸收燃气热量后变成高温高压蒸汽，温度达500℃ ，压力大约为18公斤/厘米2，这些蒸汽推动蒸汽轮机做功，驱动交流发电机和整流机组产生直流电，为推进系统提供能量。水蒸汽冷凝成水后，返回蒸汽发生器，完成循环过程。技术实现的难点和重点　主要在于此系统的液氧采用的是高压储存（60公斤/厘米2）或者低温低压储存（﹣185℃，2-10公斤/厘米2） ，无论液氧储存罐置于何处，必须要经得起5g的冲击。因此液氧储存罐应安装在低频主要技术优点　功率大，可满足潜艇水下航行需要，法国在为巴基斯坦建造的“阿戈斯塔”90B级潜艇上所安装的 MESMA/AIP系统的功率为200千瓦；燃烧产物的排放非常隐蔽，由于燃烧时的压力较大，燃烧产物的压力也较大，不需要使用其他机械系统加压就能自动排出艇外，相应也就减少了潜艇的自噪声；另外使用气泡分裂系统使排出的二氧化碳气泡减小，提高废气的海水溶解度，如果情况危急，可将燃烧产物进行冷凝储存在艇内，此举将大大提高潜艇的隐蔽性。缺点和不足　整个系统非常庞大，辅助机械设备较多，此AIP系统主要部件有燃烧室、蒸汽发生器、二氧化碳冷凝器、蒸汽冷凝器、涡轮交流发电机、各类泵，所以系统安装布置比较困难，需较大舱室空间，这直接影响此AIP系统的实用性；热效率低、经济性较差，此AIP系统的氧消耗量比闭式循环柴油机（CCD/AIP）系统要高15%左右，同时在相同水下续航力的条件下，乙醇所占容积要比CCD/AIP系统多一倍，而且所有系统部件都需要特殊的设计，投资较大，经济性差。目前法国是在MESMA/AIP系统上取得进展最大的国家。1988年以来，法国就使用400千瓦燃烧室平台进行该系统的试验，并且取得较大进展，已进入实用阶段。1994年，巴基斯坦从法国舰艇建造局订购了3艘“阿戈斯塔”90B级潜艇，这三艘潜艇将安装法国自主研制的MESMA/AIP系统，这将大大提高巴基斯坦的水下作战能力。除此之外，德国MTU公司也在加大对MESMA/AIP系统的研究力度，其使用的燃料将是柴油，功率也会增大到700千瓦，一旦研制成功，将会大大提高MESMA/AIP系统在国际市场上的竞争能力。 燃料电池（FC/AIP）系统是最具竞争力的AIP系统，它是直接将反应物质化学能用电化学方式直接转换为电能的能量供应系统。主要组成部分有燃料电池及其储存设备和转换器、氧化剂及其储存设备和转换器、控制装置。其中燃料电池主要种类有碱性燃料电池、质子交换膜燃料电池、磷酸燃料电池、熔融碳酸燃料电池、固体氧化物电解燃料电池等，其中最有前途的是质子交换膜燃料电池（PEMFC）。质子交换膜燃料电池系统中的氢/氧燃料电池的工作原理实际上就是电解水的逆过程。质子从阳极移到阴极，在阴极氧气反应形成阴离子，阴离子与透过薄膜的氢阳离子反应生成水。这种燃料电池采用铂作催化剂的气体扩散电极，其负载量为4毫克/平方厘米，碳板用作导电体。电池双极板之间的冷却装置将水从系统中排出。一定数量的电池模块通过串、并联方式组成燃料电池装置，这只是一种单纯的能量转换装置。燃料电池系统构成与一般电池有很大差别。在此系统中，反应物质及其存储装置与能量转换装置是相互独立的。燃料电池的大小决定系统的输出功率，与储存能量多少无关；反应物质多少决定系统储存能量，在一定的输出功率下如果要增大储存能量，只需增大反应物质及其存储装置，无须增大能量转换装置，即燃料电池。反应物质用完后，补充反应物质即可，无需更换燃料电池。主要技术优点　能量转换效率很高，燃料电池通过电化学方式直接将化学能转变为电能，省去了热机发电时所必须经过的“燃料化学能→热能→机械能→电能”复杂的转换过程，减少了能量损耗，理论上的能量转换效率可以达到100%，实际效率可达到70%；对外热辐射较少。由于能量转换过程中能量损耗较少，所以相应的散热也少，这就有效的降低了潜艇的热辐射，减小被敌红外探测仪器发现的几率；噪声较小，燃料电池系统由于直接进行能量转换，因此本身并无机械运动部件，因此工作过程中非常安静，可以使得潜艇在航行时获得极佳的隐蔽性；系统维护保养、制造加工很方便，由于系统无机械运动部件，因此就没有磨损造成的故障，同时对于零部件的加工要求低，也便于制造加工，通过集中控制装置可以实现对各个辅助系统的控制，便于实现自动化；过载能力强，燃料电池的短时过载能力可达额定功率的2倍，而柴油机等热机却没有这么大的过载能力，因此装备燃料电池AIP系统的潜艇可进行短时的加速航行；系统配置灵活，便于安装，燃料电池是由若干个电池单元串、并联而成，可根据潜艇内部布置的需要，灵活选择燃料电池的配置方式；效率随输出功率变化特性较好，特别适合潜艇对于动力装置需要功率范围宽而效率高的要求。缺点和不足　燃料危险性非常大，易发生险情，目前的燃料电池只能用纯氢作燃料，纯氢的加工提取工作异常复杂，且在潜艇狭小空间内，纯氢一旦发生泄漏，浓度超过极限易发生爆炸，危险性很大；系统比功率较小，目前质子膜燃料电池的比功率只有100瓦/公斤，比之柴油机的300瓦/公斤相差较远，要想达到相同功率，燃料电池所需重量要大于柴油机等；工作寿命短、价格较高，目前的质子膜燃料电池的工作寿命只有5000小时，距离40000小时的目标寿命相距较远，同时其价格也是柴油发电机组的3-6倍，约为3000美元/千瓦，不是一般国家海军可以承受了的。 核电混合推进系统（SSN/AIP）的研制工作也在不断推进和深入，加拿大在此类AIP系统的研究方面走在了世界各国的前面，其研制的AMPS型核电混合推进系统即将迈入实用阶段，这种只需经过简单改装就可使常规潜艇变成小型核潜艇的动力系统日益引起各国海军的注意。但必须指出的是，目前无论哪种AIP系统，其输出功率均不能满足常规潜艇水下最大航速航行的需求。只有将AIP系统与当前潜艇的“柴电”动力装置组合在一起，构成混合推进装置才具备实用价值。AIP系统只有在作战情况下使用，作为辅助动力系统，延长潜艇水下续航时间和航行距离，扩大水下活动范围。而在一般情况下，还需“柴电”动力装置作为主要推进系统。无论怎样，AIP系统使得常规潜艇可以在敌情威胁严重的情况下取消通气管状态，减少暴露几率，提高隐蔽性，一旦装备潜艇后，无疑将会使现代常规潜艇的攻防作战能力得到大幅提升。

i must go now.

E A C D F B G H

这样的一个等式关系对应两个未知数是没有常规办法把问题解答出来的，列出的方程式属于不定方程。需要把题目补充完整才可以，应该还缺少一定的条件。个人认为可以补充问题如下：某产品每件生产成本为50元,原定销售价65元.经市场预测,从现在开始的第一个季度销售价将下降10%,销售量会增加50%；第二个季度又将回升4%，销量比原销量增加40%.这样可以使得半年后销售总利润不变，求第一季度和第二季度的销量之比。解：由题意得：〔65*（1-10%）-50）*（1+50%）*a+〔65*（1-10%）（1+4%）-50〕*（1+40%）*b=（65-50）（a+b）整理得15*（a+b）=8.5*1.5*a+10.84*1.4*b解得：a:b=1:12.78；约等于1：13其中题中的50%，40%可以调整，但是如果要满足题意需求，第二个调整后的值应该比38.4%大，第一个调整后的值应该比第二个大，小于76.4%。

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