Why our only true enemy is bacteria?

这句话语法不对,应该是used 因为medicine和use 直接存在被动关系.另外你也可以认为是medicines that are used..后置定语.你要记住在英语的语法框架下,如果两个动词连用,中间没有连词的话,那么其中一个动词必须以非谓语的形式出现.非谓语就是to do ,ing 和动词过去分词三种形式.

Solution:
The rate of population growth is proportional to the current population,i.e.,
dP(t)/dt = kP(t).
Solve the differential equation,we get the general solution
P(t)=Ae^(kt).
Then,based on the given condition,we have
600 = Ae^(2k),
75000 = Ae^(8k).
Solve the equations for A and k
A = 120,
k = 0.8047.
and we get the bacteria population as a function of time.
I suppose you are able to finish it from here.
Good luck!

您好,很高兴为您
This would prevent U from the infection of bacteria.
This 代词作主语
would prevent谓语
U 宾语
from the infection of bacteria 介词短语作状语
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1 他喝酒过量.（酗酒）
2 肺炎会使年老或年幼者的流感复杂化.

47. The underlined word magnified means enlarged.
48. A rounded bacterium is the smallest according to the passage.
49. A boat powered by a motor.
50. To tell us how difficult it is for bacteria to move thro

略

这里的survive是做不及物动词,表示存活得状态,后面的eating nothing but antibiotics是作为修饰存在,而不是survive on 这个词组的后续

多菌体

how is it possible for bacteria to human proteins?
想让细菌变成人体所需的蛋白质,这可能吗?
供您参考!没有上下文翻译可能有出入

datum -> data
criterion -> criteria
medium -> media
stratum -> strata
memorandum -> memoranda

不是:细菌是原核生物.真菌才是真垓生物.可以进行孢子生殖,不一定是有性生殖.

acteria
翻译为 细菌
(bacterium的名词复数);

细菌数翻四倍需要1小时
半满时是10点,
1小时前,9点：1/2 处以4 =1/8
答案：9点的时候八分之一满

germ细菌是微生物的非医学术语,其中包括寄生虫,阿米巴原虫,真菌,细菌,病毒,以及其他一些.
而bacteria是germ的一种

actively respiring bacteria是益生菌
bacterial assemblage 是细菌组合,即菌落

可数名词,用many
bacteria已经是复数了,单数是bacterium,因为研究单个细菌没有意义,所以几乎不用bacterium.就像另一个词data一样,一般我们都用data,已经是复数了,单数datum几乎不用.

B是正确的.下午2点500个.正午250
我觉得我挺详细的啊- -4点1000个,每往前推2小时减半

A

leave
注意时态和人称等的变化

The Bacteria [bækˈtɪərɪə] (help·info) (singular:bacterium) are a large group of unicellular microorganisms.Typically a few micrometres in length,bacteria have a wide range of shapes,ranging from spheres to rods and spirals.The name derives from the Greek βακτήριον,baktērion,meaning "small staff".) Bacteria are ubiquitous in every habitat on Earth,growing in soil,acidic hot springs,radioactive waste,[2] water,and deep in the Earth's crust,as well as in organic matter and the live bodies of plants and animals.There are typically 40 million bacterial cells in a gram of soil and a million bacterial cells in a millilitre of fresh water; in all,there are approximately five nonillion (5×1030) bacteria on Earth,[3] forming much of the world's biomass.[4] Bacteria are vital in recycling nutrients,with many important steps in nutrient cycles depending on these organisms,such as the fixation of nitrogen from the atmosphere and putrefaction.However,most bacteria have not been characterized,and only about half of the phyla of bacteria have species that can be cultured in the laboratory.[5] The study of bacteria is known as bacteriology,a branch of microbiology.
There are approximately ten times as many bacterial cells as human cells in the human body,with large numbers of bacteria on the skin and in the digestive tract.[6] Although the vast majority of these bacteria are rendered harmless by the protective effects of the immune system,and a few are beneficial,some are pathogenic bacteria and cause infectious diseases,including cholera,syphilis,anthrax,leprosy and bubonic plague.The most common fatal bacterial diseases are respiratory infections,with tuberculosis alone killing about 2 million people a year,mostly in sub-Saharan Africa.[7] In developed countries,antibiotics are used to treat bacterial infections and in various agricultural processes,so antibiotic resistance is becoming common.In industry,bacteria are important in processes such as sewage treatment,the production of cheese and yoghurt through fermentation,as well as biotechnology,and the manufacture of antibiotics and other chemicals.[8]
Once regarded as plants constituting the class Schizomycetes,bacteria are now classified as prokaryotes.Unlike cells of animals and other eukaryotes,bacterial cells do not contain a fully differentiated nucleus and rarely harbour membrane-bound organelles.Although the term bacteria traditionally included all prokaryotes,the scientific classification changed after the discovery in the 1990s that prokaryotic life consists of two very different groups of organisms that evolved independently from an ancient common ancestor.These evolutionary domains are called Bacteria and Archaea.[9]
from wikipedia

胡萝卜汤中选定的植物提取成分对病原菌的杀菌活性

acteria已经是复数了,单数是bacterium（一般很少用,因为研究单个细菌没意义）,此类词还有data,单数的datum一般不用.

C 前面的bacteria是集合名次,单数的,所以要用it is 后面的句型是It's hard to do something,因为前面提到is it了所以这一句的主语it可以省略

按说应该是retard,冷鲜肉延缓细菌传播~
如果说把Refrigerating meats当作一类事物,做不可数名词来看,选A也可以吧~

有两种在实验室中生长的细菌品种.菌种A初始是35mg并且每6小时质量增加4倍,菌种BA初始是85mg并且每4小时质量增加3倍.
a.）每个培养皿（中的细菌）的增长速度是什么?
b.）什么时候两个培养皿中的细菌有相同的质量?
answer:
a.) the growth rate of strain A is 35*(4-1)/6 = 17.5 (mg/h)
the growth rate of strain B is 85*(3-1)/4 = 42.5 (mg/h)
b.) We suppose the time is t hour,then:
35 + t * 17.5 = 85 + t * 42.5
=> t < 0 ,so I think the data is wrong.
答案：
a.) A的增长速度是 35*(4-1)/6 = 17.5 (毫克/小时)
A的增长速度是 85*(3-1)/4 = 42.5 (毫克/小时)
b.) 假设时间为t小时后两者质量相等,则：
35 + t * 17.5 = 85 + t * 42.5
=> t < 0 ,所以我认为数据是有错误的.

莱姆病（由扁虱叮咬而出现麻疹、发烧等症状的一种传染性疾病）是由黑腿壁虱携带的螺旋形细菌引起的.

有啊,以ium结尾的名词,其复数形式变为ia的,有不少呢：
如：
medium media 媒介
stadium stadia 体育场
datum data 数据
如果对你有所帮助,请点击我回答下面的“选为满意回答”按钮,

acteria是复数形式.
正确答案应该是were.这里不表示客观事实.只有一些公认的客观事实才能用一般现在时表示.客观事实即为真实的自然现象,规律,或是历史上发生的事件.它是真实存在的.比如,太阳从东边升起. The Sun rises from East every day.
有问题请追加~

(t)的单位是个数/小时
r(t)=450.269e^1.12567t
对这个解析式在0到3小时做定积分
∫r(t)dt
=∫450.269e^1.12567t dt
=1/1.12567*∫450.269e^1.12567td1.12567t
= 450.269/1.12567*∫de^1.12567t
=11313.259
答案：11313.259+500=11813.259

that right off bacteria and viruses
是cells的定语

这句话里面“spread”的形式没错
因为 spread 可以是及物动词 所以 这是 过去分词短语作后置定语 与所修饰词 是被动关系
句子意思 麻风病是由从鼻子和嘴的 液体 所传播的细菌引起的

为减少病菌抗药性的形成,保持抗菌药物的效能,本药应该只用于治疗或预防已确诊的或高度可疑的（本药）适用病菌引起的感染.如果有细菌培养和药物耐受性的数据,在选择或更改抗病菌治疗方案时应该考虑进去.如果没有这类数据,本地流行病学和药物耐受性规律也能在（我们）凭经验选择的治疗方案时带来帮助.

acteria [bækˈtiəriə]
细菌
virus [ˈvaiərəs]
病毒；病毒性疾病,病毒病,也可以指电脑病毒computer virus