快速复习你们谁不知道这是什么。

Quick refresher for those of you who don't know what this is.

youdao

Does anyone have that in their brain somewhere for ready use? I don't, in fact, so it's actually okay if you don't know all your common ions, if you missed that part.

你们有谁有印象它们有什么用吗？,我当时是不知道，所以如果你们不记得,这部分也没有关系。

麻省理工公开课 - 化学原理课程节选

Now be honest, how many of you in a blind taste test can taste the difference between ordinary Coke and ordinary Pepsi?

老老实实,你们谁能在不知道的情况下尝出,可口可乐和百事可乐的不同

耶鲁公开课 - 博弈论课程节选

Don't you know who the Fat Lady really is?

你们难道不知道谁是胖太太吗？

耶鲁公开课 - 1945年后的美国小说课程节选