氢“只是最坏情况下的汽车燃料选择，”火箭科学家罗伯特·祖布林说，他还是《能源的胜利》的作者，这是一本讲述关于后石油未来的书。

Hydrogen is "just about the worst possible vehicle fuel", says Robert Zubrin, a rocket scientist and the author of "Energy Victory", a book on the post-petroleum future.

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我在课余时间常常看关于火箭的书，不为别的，只为圆我的飞行梦。

I often in their spare time reading about the rockets, not for other, only for my flying dream.

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这是一本关于宇宙火箭技术的书。

This is a book which tells about space rocket technology.

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