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Alumina is really stable, which is why it takes so much energy to make aluminum.
矾土相当稳定，这就是为什么需要消耗大量的能量制备铝了。
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- 来自原声例句
Alumina is really stable, which is why it takes so much energy to make aluminum.
矾土相当稳定，这就是为什么需要消耗大量的能量制备铝了。
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