He forbids any talking in class.

他严禁课堂上讲话。

《牛津词典》

She was admonished for chewing gum in class.

她在课堂上嚼口香糖，受到了告诫。

《牛津词典》

You can skip the next chapter if you have covered the topic in class.

下一章，你要是在课堂上已经讲到了，就可以跳过去。

《牛津词典》

"I can say that,anecdotally, virtually all the teachers noticed immediately much more alertness in class, definitely more positive mood.

VOA: special.2010.10.07

This will allow me to project images in class and for you to look at them later at home.

这样我可以放映一些图片,给你们在课上和回家后看。

耶鲁公开课 - 现代诗歌课程节选

So it's kind of... it's nice that you can choose because I feel like you have a better time in class.

可以自己选课是件很好的事情，因为这样你在课堂上感觉会更好。

高中生活怎么样？ - SpeakingMax英语口语达人

It didn't take long for Christie, born in 1730, to move up in class.

FORBES: In the House

They combine the highest quality 3D lenses from Volfoni and the best in class tracking systems.

ENGADGET: SMI Eye-Tracking 3D Glasses use rim-based cameras to adjust perspective

At Kellogg, students are encouraged to work on projects in class directly related to their company.

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