I can easily crack it, but I can not break it asunder, for the bark is so strong that it holds it together.

我很容易就把它弄折了，但没法让它断开，因为外皮太坚韧了，总连在一起。

Yielding to some vast power from below it had broken asunder, leaving this great hollow into which human beings were now penetrating for the first time.

在来自下方的某种巨大力量的作用下， 它四分五裂，留下了人类第一次进入的巨大空洞。