虽然课堂时间本身并不能培养出一个有教养的孩子，但是学习需要时间，而更多的学习需要更充足的时间。

While classroom time alone doesn't produce a well-educated child, learning takes time and more learning takes more time.

youdao

测试是要在常规的课堂时间写出来。

The tests will be written in the normal class period.

youdao

历史在壮大，但是课堂时间却没有。

History grows; class time doesn't.

youdao

So more details on sectioning on Friday, but do realize that office hours are very much in progress.

更多细节，尽在本周五,好了，课堂时间宝贵，我们就不多说废话了。

哈佛公开课 - 计算机科学课程节选

I've been teaching long enough to know that doing derivations in class is equivalent to pouring ice water on the proceedings, so I do this sparingly.

我已经教了这么长时间书,所以我知道在课堂上讲推导,就好像泼冰水一样，所以我在讲这个的时候很小心。

麻省理工公开课 - 固态化学导论课程节选

Why doesn't everyone go ahead and take ten more seconds on the clicker question.

每个人为什么不开始做课堂表决题呢,只需要10多秒的时间。

麻省理工公开课 - 化学原理课程节选