youdao

And, if we know it for a certainty, how do we know it?

如果我们确实知道这些情况，我们又是如何得知的呢？

youdao

I know for a certainty that the company has been bought up.

我确实知道公司已经被人收购了。

youdao

I know for a certainty that the company has been bought up.

我确实知道公司已经被人收购了。

youdao