很多人来围观，我很奇怪，这些人在我们来到之前是干什么的呢？

The crowd is now huge and I wonder what they were doing before we arrived.

youdao

给力？好吧，让我们看看氢是干什么的！

Oh yeah, Zappa? Well, let me show you what hydrogen can do!

youdao

看起来还是很有诚意的，但我们也不知道他们是来干什么的。

Or look in good faith, but we do not know what they are to the.

youdao

看起来还是很有诚意的，但我们也不知道他们是来干什么的。

Or look in good faith, but we do not know what they are to the.

youdao