In some classes, many students were even falling asleep.

在上某些课时，有很多同学甚至都睡着了。

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In some classes, teachers actually broke down projects into manageable, doable, understandable steps.

有些班级，老师会把项目分成能管理，可实施，能理解的步骤来进行。

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We also had different students in some classes, so it was a struggle for me to remember all the ces and names.

上某些课的时候，我们班上的同学也不一样，所以对我来说记住所有人的面孔和名字可是一件难事。

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In some classes, only Spanish is spoken, even during the Pledge of Allegiance -- a morning tradition for American schoolchildren.

VOA: special.2010.06.17

You'll find out, if you go on to some of the other classes in course 6, there are a lot of different ways that you can measure this.

你会发现,我们会有很多不同的方式，去计算它,最常见的方法。

麻省理工公开课 - 计算机科学及编程导论课程节选

So I took some classes in photography so that I could set up a studio to, to do all the food photography myself.

我上了一些关于摄影的课，这样，我就能建立一个工作室，独立完成食物的拍摄工作。

我的书出版了 - SpeakingMax英语口语达人

But he does think there is way too much money in some classes of hedge funds, such as those specializing in merger arbitrage.

FORBES: Borrowed Time?

Five years in prison is not an appropriate punishment for the crime, but maybe some parenting classes are in order.

FORBES: Breastfeeding on a train is okay. But on a bender?

For some people in the lower classes, they often try to become credit card experts and loans become a way to compensate for painfully low incomes.

FORBES: Do We Take Debt Seriously Enough?