氧气在细胞呼吸的新陈代谢过程中是必不可少的，它能使细胞有效地从有机食物中获取能量。

Oxygen is essential for the metabolic process known as cell respiration that allows cells to efficiently harvest energy from organic food.

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最近的研究表明脂质体在转染呼吸道上皮细胞中是有用的。

Recent studies have shown lipoplexes to be useful in transfecting respiratory epithelial cells.

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氧气驱动着呼吸过程，给我们的细胞提供能量。

Oxygen drives the process of respiration, which provides our cells with energy.

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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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