它是一种清洁剂，能够杀死细菌，清洁伤口。

A cleanser. It killed germs. It cleansed wounds.

youdao

洗手液中含有酒精，能够杀死细菌且易挥发。

A hand sanitizer contains alcohol, which kills the germs and then evaporates on contact.

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接着那些蛋白能够做例如释放毒素或改变毒物等事情，以至于使毒物不再能够杀死细菌。

Those proteins then are able to do things such as pump toxins out or alter toxins so that they can no longer kill the bacteria.

youdao

Antibiotics are chemicals, usually small organic molecules that will kill micro-organisms like bacteria.

抗生素是一类化学物质,它们通常是小分子有机物,能够杀死细菌这样的微生物

耶鲁公开课 - 生物医学工程探索课程节选