We have three classes today .

我们今天有三节课。

youdao

We have three classes in the afternoon.

下午我们有三节课。

youdao

We have three classes in the morning and two in the afternoon.

早上，我们有三节课和下午，有两节课。

youdao

"We're very proud that of our first three graduating classes, have not only graduated from View Park Prep, but also have enrolled in top colleges and universities in the United States."

VOA: standard.2010.06.24

What have we done over the last three or four lectures? We've started introducing you to classes of algorithms. Things that I'd like you to be able to see are how to do some simple complexity analysis.

我们在过去三节或四节课中讲了什么？,我开始向你们,介绍算法的类型,我想你们知道的是,如何做一些简单的复杂度分析。

麻省理工公开课 - 计算机科学及编程导论课程节选