Hande is in three Advanced Placement classes, which are meant to prepare students for college.

VOA: special.2009.11.05

And since the city, you remember, is simply the soul at large, the three classes of the city merely express the three parts of the soul.

而因为城市，简言之，即是灵魂的放大版，城市的三个阶级,因此即代表着灵魂的三个部份。

耶鲁公开课 - 政治哲学导论课程节选

I had a behavioral economics teacher named Thomas Leonard who I took, I think, three classes from and I really enjoyed that.

我有一位行为经济学的老师叫托马斯·伦纳德，我想，我上了三次课就喜欢上了他。

我尊敬的教授 - SpeakingMax英语口语达人

Students take full loads of classes, including two or three summers.

VOA: special.2009.07.23

There are three classes of sugar: monosaccharides, disaccharides, and polysaccharides.

糖分为三个等级,单糖,二糖,以及多糖

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Three hundred inmates take classes every semester.

VOA: special.2011.07.07

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

"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

you always have to sit in the same room for three hours for multiple classes.

你必须在同一个房间为了多个课程坐三个小时。

对于古怪教授 - SpeakingMax英语口语达人