当初它要么是被小行星撞击，其大部分表面爆裂进入太空，要么是因为热，年轻的太阳简单地汽化了其外层。

Either it was then hit by an asteroid which blasted much of its surface into space, or else the hot, young sun simply vaporised its outer layers.

youdao

当初它要么是被小行星撞击，其大部分表面爆裂进入太空，要么是因为热，年轻的太阳简单地汽化了其外层。

Either it was then hit by an asteroid which blasted much of its surface into space, or else the hot, young sun simply vaporised its outer layers.

youdao