If we build the highest building on earth one day it would fall down.

如果我们修建最高的大厦在地球上一天它会跌倒。

youdao

One day he even worried that the sky would fall on his head.

一天，他竟然想到，天会塌下来，地会陷下去，自己到哪里去安身？

youdao

One day he even worried that the sky would fall on his head.

一天，他竟然想到，天会塌下来，地会陷下去，自己到哪里去安身？

youdao