现在他不知道典型的的症状。

Now he did not know the necessary symptoms.

youdao

你不知道你现在来是多么幸运！

You don't know how lucky it is, your turning up just now!

youdao

我也不知道，现在荣誉的同义词是什么？

I don't know, what would a synonym today be for honor?

youdao

But it was there for over a thousand years, and we now know things to be a little different.

但是，它存在了超过1000年，我们现在知道的事情有点不一样。

麻省理工公开课 - 固态化学导论课程节选

Anybody have any questions on that, because when we voted, the majority of the class thought it was reversible Yes.

上节课我们投票时，多数人都认为它是一个可逆过程，而现在大家应该都知道了,它其实是不可逆过程，有问题吗？

麻省理工公开课 - 热力学与动力学课程节选

And I don't actually know the periodic table entry for raisins. So I'll have to write it out.

我不知道葡萄干的周期表条目是什么,所以现在我要把它写出来。

麻省理工公开课 - 计算机科学及编程导论课程节选