植物通过空气输送的是一种名为挥发性有机化合物（简称VOCs）的化学混合物。

What the plants pump through the air is a mixture of chemicals known as volatile organic compounds, VOCs for short.

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来自外太空的各种宇宙射线通过空气进入大气层，但来自太阳的大量辐射却被屏蔽了。

Cosmic rays of various kinds come through the air from outer space, but enormous quantities of radiation from the sun are screened off.

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因此，乐器的进化优化了它们的声学特性，且优化了乐器振动的方式，并将这些振动通过空气传到我们的耳膜。

So musical instruments evolved in ways that optimize their acoustical properties, how the instrument vibrates and sends those vibration through the air to our eardrums.

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But it can be acquired in the air, from patients that are from- from other individuals that are infected.

天花会通过空气传播,通过病人和其他感染者呼出的空气传播

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So, in a sense, it says, you know, if you wanted to build a boat that took energy out of the warmth of the air to sail around the world, you can do that.

因此，某种意义上说，它宣称如果你想要造一艘船,通过从空气中获取热量,这是可以做到的。

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The horn obviously is a brass instrument and what makes the sound is a vibrating column of air.

显而易见的,圆号是个铜管乐器,它通过震动空气柱来发出声音

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