大碰撞同时会把两个星球的外层剥离，外层包含轻得多的元素比如硅。
Animpact would have stripped away the outer layers of the two worlds, containing mostly lighter elements like silicon.
大碰撞同时会把两个星球的外层剥离，外层包含轻得多的元素比如硅。
Animpact would have stripped away the outer layers of the two worlds, containing mostly lighter elements like silicon.
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