classes

基本解释

Like all objects, they have classes.
与所有对象一样，它们都有类。
How do you know if you need these classes?
你怎么知道您是否需要这些课程呢？
The courses have been geared down to the lower ability of students in there special classes.
课程降低了要求，以适应这些特殊班能力较低的学生。

"You cannot choose your own classes. And you don't have the right to drop out of one of them."
Thus far, for us it's been testing individual functions. Later in the term we'll talk about unit testing of classes.
至今为止，我们用到单元测试的地方,就是测试每个单独的方法,在后面我们会讲到类的单元测试。
麻省理工公开课 - 计算机科学及编程导论课程节选
But this year, it's my senior year, so I'm just trying to take it easy and... take my classes.
但是今年我已经大四了，所以不想再那么忙了，就……好好地上课吧。
写作课程比较难 - SpeakingMax英语口语达人

He moved back to Florida and began taking classes at the University of Central Florida in Orlando.
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A class is a group of students who are taught together.
A class is a course of teaching in a particular subject.
A class of things is a group of them with similar characteristics.
If you do something in class, you do it during a lesson in school.
If you say that someone or something has class, you mean that they are elegant and sophisticated.
The students in a school or college who finish their course in a particular year are often referred to as the class of that year.
Class refers to the division of people in a society into groups according to their social status.
&rarrsee also middle class , upper class , working class
If someone or something is classed as a particular thing, they are regarded as belonging to that group of things.
&rarrsee also business class , first-class ,second-class , world-class