其分子同样也应该小，也就是说，该燃料应该含有少量的碳原子。
Its molecules should also be small, that is, they should contain few carbon atoms.
原子反应堆需要一种合适的燃料。
原子反应堆需要一种适合的燃料。
这些元素用作原子反应堆的燃料，已变得非常重要。
These elements have become very important because of their use as fuels for nuclear, reactors.
这些元素用作原子反应堆的燃料，已变得非常重要。
These elements have become very important because of their use as fuels for nuclear, reactors.
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