For the Chinese, they thought drinking boiled water was the easiest way to protect themselves from the harmful bacteria.

对中国人来说，他们认为喝开水是保护自己免受有害细菌侵害的最简单方法。

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Healthy lungs produce a natural antibiotic that protects them from infection by routinely killing harmful bacteria on airway surfaces.

健康的肺部会产生一种天然的抗生素，通过杀死呼吸道表面的有害细菌来保护肺部不受感染。

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Though the precise harm to our bodies remains unknown, concerns include the microplastics themselves, as well as the fact that they absorb a range of harmful bacteria.

虽然微塑料具体会对我们身体造成怎样的伤害尚不明确，但微塑料本身和他们吸收了大量的有害细菌这一事实让我们忧心忡忡。

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Studies have discovered evidence of harmful bacteria in toilets,on surfaces where food is prepared, even on home telephones.

VOA: special.2009.10.13

Recently,American researchers found harmful bacteria in a place most of us would never suspect.

VOA: special.2009.10.13

This cools the inner pot and helps keep food safe from harmful bacteria.

VOA: special.2009.02.09

This means it is heated to a high temperature to kill off any harmful bacteria.

BBC: Last Updated: Thursday April 28 2005 13:24 GMT

But he says they are less useful for vegetables, which often carry less harmful bacteria.

BBC: Should you smell food before throwing it away?

Under normal circumstances, the plaque that grows on teeth contains a mix of good and harmful bacteria.

BBC: Dental bacteria swap resistance