It's time to class tomorrow, should go to bed now. Hope I won't be late again.

明天又是上课时间，早点休息，争取不再迟到。

youdao

Class is over. It's time to clean the classroom.

下课了。是我们打扫教室的时候了。

youdao

I know that if he doesn't do his homework before his karate class, it's not going to get done because by the time we get home from his karate class he's too tired.

我知道如果空手道课前他不做家庭作业，作业就完成不了，因为到我们从他的空手道课回来后，他太累了。

youdao

We are really just at the very beginning of open course ware, but it's a very exciting time and I look forward to seeing you in class and seeing you in class we'll talk more about this.

我们仅仅在开放课程网站的起步阶段,但这是个令人振奋的时刻,我期待在课堂上看到你,并且在课堂上与你讨论这些问题。

麻省理工公开课 - 媒体、教育、市场课程节选

And that's something that we'll talk about from time to time in the class, but it's something you'd get more out of,for example, if you studied an art history class, or if you studied a literature class that talked about some of these issues in later European times.

这些我们在课堂上,会经常讨论，但如果你参加其他课，会学到得更多，比如艺术史课程，或者文学课,也会讨论欧洲各个时期的宗教问题。

耶鲁公开课 - 新约课程节选

Mandarin competence takes 2, 200 class hours, with half of that time spent in a country where it's spoken, according to the U.S. State Department's Foreign Service Institute, whereas Spanish can be learned in 600 to 750 class hours.

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