Researchers raised rodents in a sterile environment — meaning the animals are bacteria-free.

研究人员在无菌环境中饲养了若干老鼠——也就是说它们接触不到细菌。

A nurse had asked them if farting in a sterile environment, like the surgery room she worked in, could cause infections.

一个护士曾问他们如果在无菌环境放屁，比如在她的手术室，是否会引发感染。

Yes, but in a sterile environment babies don't get exposed to – or don't meet – a wide enough variety of bacteria.

是的，但是在无菌环境中婴儿接触不到各种细菌。

The problem is, harmful microorganisms are stubborn creatures able to find their way into even highly sterile environments such as hospital operating rooms.

问题是，有害微生物是顽固的家伙，总能想办法来到高度无菌的环境中，比如医院的手术室。

Mice raised in sterile environments, where no bacteria could colonize their gut, exhibit social traits similar to those seen in humans on the autism spectrum.

在无菌环境中长大的老鼠，没有细菌可以在它们的肠道中定植，这些老鼠会表现出与自闭症患者相似的社会特征。

Yeah don't pop your blisters, because within the blister that's kind of a sterile environment, so you don't want to open it up and create a potential source of infection.

不要挤你的水泡 因为水泡里是一种无菌的环境 所以你不需要打开它来产生可能性的感染源。