Now, the LCROSS observations provide a handy explanation for the hydrogen: it's bound with oxygen to form water.

现在，LCROSS的观测提供了一个方便的解释：氢与氧结合，形成了水。

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The linear glucan molecules of cellulose are bound together by hydrogen bonds.

纤维素中直链葡聚糖分子由氢键连接在一起。

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The linear glucan molecules of cellulose are bound together by hydrogen bonds .

纤维素中直链葡聚糖分子由氢键连接在一起。

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This finding ties in with the revelation of hydrogen on Vesta, because the likeliest explanation for the indentations on the surface is that hydrogen, which is likely bound up in minerals there, is released in the form of water vapor when the material is heated up by impacts.

MSN: Surprisingly, giant asteroid Vesta covered in hydrogen

Hydrogen was indeed found, but it is still unclear whether it is in the form of ice, or of some other hydrogen-containing compound, such as hydrated minerals that have water bound chemically into their crystal structures.

ECONOMIST: Creative destruction