Like deuterium, it is rare relative to helium-4, but, unlike hydrogen, helium doesn't form chemical compounds as abundant as water.

象氘一样，相对于氦- 4它是非常罕见的，但是不同于氢，氦不是来自化学混合物象水那样丰富。

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As America has abundant supplies of coal and natural gas from which hydrogen can be made, what's not to like about it?

当美国还拥有充足的能生产氢的煤炭和天然气的供应时，有什么理由不喜欢它呢？

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Hydrogen atoms are more abundant than either helium or oxygen but their low mass means they are easily swept aside by the high-speed solar wind and can’t readily be detected.

福斯勒指出氢原子数量比氦原子或氧原子数量要多得多，但是它质量很小，很容易被太阳风吹散，从而不能被稳定地观测到。

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Zhang lead a Virginia Tech team that developed a way to produce large quantities of hydrogen from xylose, an abundant simple sugar that makes up 30 percent of the cell walls of plants.

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Of course hydrogen can also be produced from water assuming that cheap and abundant energy is available from another source to electrolyze the water and compress or liquefy the gas.

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