So how did he stumble upon the idea?

他怎么突然间会有这种想法？

youdao

You don't have to dig deep here before you stumble upon some ancient bric-a-brac.

在这里，只要稍微一挖，就可以发现一些古老的东西。

youdao

You don't have to dig deep here before you stumble upon some ancient bric-a-brac.

在这里，只要稍微一挖，就可以发现一些古老的东西。

youdao