虽然机舱压力可以被调节，以避免人体发生高空反应，但你仍会感到困倦或头痛。

Although the pressure of the cabin is adjusted to prevent altitude sickness, you could still experience sleepiness or a headache.

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GLRX2 和 TXN1 是人体细胞内有关氧化还原反应的基因，分别编码抗氧化酶系统成员硫氧还蛋白和非酶系统成员谷氧还蛋白。

GLRX2 and TXN1 are oxidation-reduction reactions related to human genes, coding antioxidase system member thioredoxin and non-enzymatic system member glutaredoxin respectively.

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其它虫卵则困在人体组织内，引起免疫反应。

Others are trapped in body tissues, causing an immune reaction.

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Enzymes work best, enzymes are proteins that catalyze chemical reactions and our bodies operate by elaborate networks of chemical reactions, When we're off from that temperature then they don't work properly.

举酶这个例子再好不过,酶是一种具有催化作用的蛋白质,人体依靠精密复杂的化学反应网络来运转,如果我们体温与之相差较大,这些酶就不能正常工作

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