以防万一在哪一课

you had better have a backup plan in case of accidents
专业团队献上最专业的解答

zhi chi shi ri zi ci si yi wu yu ye yue yin
yun yuan ying

Saw these youth start with a clean slate is makes one comfort
on the airship the equipment to have two chutes,Provides against contingencies has one to be unable to open
the airship launching center to be situated in goes out of cultivation originally the human smoke desert
advanced astronautics technology and the great team spirit possibly causes this space flight to succeed
the social activity not to be inferior in university's importance studies.

我只不过是为了储存足够的骄傲.足够的孤独和冷漠.以防万一.醒来你已离去

To be safe, I rewrite the essay and upload online. You can just directly review this online copy. Thank you,

以:凭/用...来,用来,把,拿,用.
以防万一
yǐ fáng wàn yī
近 ：有备无患、防患未然、防微杜渐
反 ：追悔莫及、亡羊补牢、悔之晚矣
【解释】万一：意外变化.用以防备难以预料的事情
【用法】动宾式；作谓语；含褒义
【出处】罗广斌《挺进报》：“许晓轩他们就学写陈然的仿宋字体,以防万一.”
【例子】我们要提高警惕,敌人来偷袭
【英语】just in case

海啸过后,印尼开始完善海啸预警系统,以防万一.

【解释】万一：意外变化.用以防备难以预料的事情

in case
in destiny
in line
in vision
in all
in vain
in
in one word
in fact
in the right position
in danger
in advance

We planned to make the shipment on July 31,however we have to change it to August 2 due to the notification we got about power cut tomorrow.
Please kindly inform the forwarder the above information.

不知你注意到没有
2/3=(3*1-1)/3^1
5/9=(3*2-1)/3^2
……
17/3^6=(3*6-1)/3^6
故原式=3*(1+1/3+1/9+1/27+1/81+1/243)-(1/3+1/9+1/27+1/81+1/243+1/729)
后面就是等比数列的问题了

太阳每天东升西落,那是告诉我们要按时作息.
海燕总和风雨搏击,那是告诉我们要不畏艰辛.
再来句搞笑滴
黄牛辛劳一生,临死还得奉献骨肉毛皮,这告诉我们 老实总是受欺.

深奥莫测：高深不易了解
心电感应：经常可以听到这样的故事,说某人的亲人在临死之前,某人就已经感应到了,或者某人远在他方的亲人发生了某种事故,某人当时就感觉到有不祥之兆.
诸如此类的故事是不胜枚举,心理学上,通常把这种现象当成是心电感应（心电感应不是成语的）
以防万一：
意外变化.用以防备难以预料的事情
用 法 动宾式；作谓语；含褒义