面包含有碳水化合物，这是一种由碳、氢和氧组成的化学物质。

Bread contains carbohydrates, which are chemicals made up of carbon, hydrogen, and oxygen.

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它含有非常少的氢和氦。

It contained very little hydrogen and helium.

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然后这些装置将氢和氧合成水，并在这个过程中释放电力。

These devices then combine hydrogen and oxygen to make water and liberate electricity in the process.

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If we take hydrogen peroxide in the liquid state, it can break down to form water and oxygen.

如果我们有一些液态的过氧化氢，它会分解成水和氧气。

麻省理工公开课 - 热力学与动力学课程节选

I'm not going to writegiven threemoles of hydrogen at one bar and three degrees, blah,bla I'm going to write it in a compact notation.

我不会写“给定1巴和多少度下,的三摩尔氢分子之类,我会把它写成一个紧凑的形式。

麻省理工公开课 - 热力学与动力学课程节选

So let's take the case of acetylene where we have two carbon atoms that are going to be triple bonded to each other, each are bonded to a carbon and then to one hydrogen.

让我们来看一看乙炔的例子,我们有两个碳原子,成三键，每个碳和一个碳一个氢相连。

麻省理工公开课 - 化学原理课程节选