我恐怕你们当中有的人已经忘了上星期我们在学繁分数的时候所教的内容了。

I'm afraid some of you students have forgotten what I taught you last week when we studied complex fractions.

youdao

我恐怕你们当中有的人已经忘了上星期我们在学繁分数的时候所教的内容了。

I'm afraid some of you students have forgotten what I taught you last week when we studied complex fractions.

youdao