I apply for class change, please approve my application.

本人想调换班级，请老师们批准。

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Mrs. Brown came in and told the whole class they would have to change the classroom the next week.

布朗太太走了进来，告诉全班同学下星期他们必须更换教室。

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When twelve-year-old John Wilson walked into his chemistry class on a rainy day in 1931, he had no way of knowing that his life was to change completely.

1931年的一个雨天，12岁的约翰·威尔逊走进他的化学教室，那会儿他完全不知道自己的生活将彻底改变。

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But now I'm going to change it, so what is that new version of class say.

好，我又要提醒下大家，类是这个模板。

麻省理工公开课 - 计算机科学及编程导论课程节选

Once again I wouldn't be teaching this class, if I didn't change is possible.

如果我认为没有改变的可能，就不会教这节课。

哈佛公开课 - 幸福课课程节选

Things started to change probably on the first day of class, but not entirely-- because there's shopping period and it's such a wonderful thing-- you shop for classes.

事情也许从开课第一天就发生变化，但没有完全不同-,因为这是购物期，妙不可言的阶段-,你们选择课程。

哈佛公开课 - 幸福课课程节选

No, this is not hype about social media and gaming, but a heavy-duty industrial class secular change.

FORBES: Apps Lead the Way to the Next Innovation Hypercycle

As this process unfolds, the Chinese middle class will change the dynamics of the world we live in.

FORBES: Are Chinese Opening Their Wallets?

And the J-Class Association can change the rules whenever it wants.

FORBES: Magazine Article