That is, all the available hydrogen bonds are formed between neighboring pairs.

就是说，所有可能的氢键，形成于相邻的一对结构单元间。

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That process – usually 65 to 75 per cent efficient – should be sufficient to plug the gap until renewable sources of hydrogen become available, he says.

这一效率为65%至75%的工序应能足够填补氢空缺，直到生产氢的可再生能源出现。

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We also have six spots available to form hydrogen bonds, so we can go ahead and fill in those electrons as well.

我们还有6个地方可以供氢原子成键，我们可以继续把这些电子填充进去。

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