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。

youdao

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。

youdao