Under the atmosphere, scientists think there is a very thin crust of carbon and oxygen.

科学家们认为在大气层下存在着一层由碳和氧组成的稀薄地壳。

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The planet has a relatively thin atmosphere composed mostly of nitrogen and oxygen.

这颗行星有相对较薄的大气层，主要由氮气和氧气组成。

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Oxygen passes through the incredibly thin walls of the alveoli into the capillaries and is then carried back to the heart via the pulmonary veins.

氧气穿过无数肺泡的薄壁进入毛细血管中，随后经肺静脉带到心脏。

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At about nineteen-thousand meters, the air is so thin and the amount of oxygen so small that a person needs a lot of special equipment to survive.

VOA: special.2011.04.06

The first is the lack of oxygen in the extremely thin air.

VOA: special.2010.06.30

The other established approach is to take two wafers of silicon, coat each with a thin layer of glass on one side (which is done by baking them in oxygen), and then fuse them together to produce a silicon-glass-silicon sandwich.

ECONOMIST: Chip technology