当我们呼吸时，氡子核可堆积在呼吸道壁层的细胞上，而阿尔法粒子可破坏DNA并有可能引起肺癌。

As we breathe, radon progeny are deposited on the cells lining the airways where the alpha particles can damage DNA and potentially cause lung cancer.

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呼吸测试的原理是运用了化学方法将呼吸中的癌细胞标示出。

The prototype breath test USES a chemical method to spot markers of cancer present in the breath.

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一棵树在它一生中都要呼吸，就像动物也要呼吸一样，这种呼吸是细胞中有机物质缓慢控制的氧化作用。

Throughout its lifetime a tree respites essentially as animals do by slow controlled oxidation of organic substances in cells.

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So, they don't start killing all the cells in your respiratory system; they only kill the cells that are harboring the virus.

所以它们不会杀死所有呼吸系统内的细胞,只杀死那些被病毒感染的细胞

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You breathe it in, it infects the cells of your respiratory tract, and the virus begins to reproduce, and then it spreads throughout your body.

你将之吸入,病原体感染了呼吸道细胞,病毒开始繁殖,接着传遍你的全身

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Before B1 begins, you've got the body working, functioning, in its bodily way--respirating, reproducing the cells, and so forth and so on.

在B1之前,你的身体还在运作,正常运作,也就是机体上的呼吸,复制细胞,诸如此类

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