The bacteria are harmless to humans.
这些细菌对人无害。
Warm milk is the ideal breeding ground for bacteria.
温牛奶是细菌理想的繁殖地。
It is possible to multiply these bacteria in the laboratory.
在实验室里繁殖这些细菌是可能的。
It is an effective treatment for the bacteria and does kill it off.
这是一种有效的灭菌方法，确实把细菌都杀光了。
Some of these bacteria are actually good for you.
实际上，这些细菌有的对你有益。
How many bacteria actually transfer in five seconds?
到底在五秒之内转移了多少细菌呢？
A large number of bacteria collected on a single shoe.
一只鞋上就聚集了大量细菌。
There were more bacteria on sidewalks than in the home.
人行道上的细菌比家里的要多。
But how many bacteria actually transfer in five seconds?
但是有多少细菌能在五秒钟内转移呢？
And bacteria, primitive forms of life, have been seen there.
细菌——一种原始的生命形式——在那里被发现。
Was there a sudden change in the viruses and bacteria around?
周围的病毒和细菌是否突然发生了变化？
The chance of these bacteria being on most surfaces is very low.
这些细菌停留在大多数表面上的可能性非常低。
But the chance of these bacteria being on most surfaces is very low.
但是，这些细菌出现在大多数表面上的几率非常低。
No bacteria can survive such heat, and no bacteria were found there.
没有细菌能在这样的高温下生存，在那里也没有发现细菌。
Even if bacteria did arrive on Earth from Mars, they must have died out.
即使细菌真的从火星来到地球，它们也一定已经灭绝了。
What happens is you have deep underground oil deposits and there are bacteria.
事实是，你有很深的地下石油储藏，那里还有细菌。
When a carpet was contaminated, less than 1% of the bacteria were transferred.
当地毯被污染时，只有不到1%的细菌会被转移。
Improperly discarded garbage can spread bacteria that are dangerous to health.
不当丢弃的垃圾会传播细菌并有害健康。
She began college as a biology major but found she was "really bored with bacteria".
她刚上大学时主修的是生物专业，但她发现自己“觉得细菌很无趣”。
但是，不是所有的细菌都有害。
Also, bacteria are not humans.
同样的，细菌也不属于人类的范畴。
那么再来看看细菌。
细菌呢？
The bacteria are naturally occurring.
这些细菌是原生的。
But the most common culprit is bacteria.
但多数情况下，细菌仍是罪魁祸首。
We use them to fight off the bad bacteria.
我们用它们抗击对我们有害的细菌。
So most bacteria go the fermentation route.
绝大多数的细菌一般都是用发酵的方法。
10% of human dry weight comes from bacteria.
人体干重中有10%来自于细菌。
This may help contain the spread of bacteria.
这可以帮助控制细菌的传播。
This may help contain the spread of bacteria.
这可以帮助控制细菌的传播。
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