... 固体颗粒污染solid contamination 液体污染liquid contamination 空气过淋器air filter ...
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liquid agent contamination 液体毒剂染毒
liquid radioactive contamination 液态放射性污染
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Just as a hen is about to lay an egg, she applies a liquid coating around it that naturally protects against contamination.
FORBES: Natural Protection
That can lead to bacterial contamination or worse if the wrong sort of liquid is used.
ECONOMIST: Vaccines
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