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来源:雅诚德英语网
In theory, you need molten iron in the core to generate one, but Mercury is so small, its core should have long since solidified.
理论上,你需要核心里的熔化铁来产生它,但是水星很小,它的核心凝固还要很久。
In theory, you need molten iron in the core to generate one, but Mercury is so small, its core should have long since solidified.
理论上,你需要核心里的熔化铁来产生它,但是水星很小,它的核心凝固还要很久。