这门课总共上12次，每次两小时。

The course is made up of 12 two-hour sessions.

《牛津词典》

你再缺一次课就会不及格了。

Miss another class and you'll fail.

《牛津词典》

这将是他以后几个月里的最后一次法语课。

It would be his last French lesson for months.

《柯林斯英汉双解大词典》

That's the average of all of your weekly quizzes in the recitation. Each of those three monthly tests gives also a sixth.

就是你们每周背诵课的测试的平均分,而三次的月考,的成绩也占六分之一。

麻省理工公开课 - 固态化学导论课程节选

We've been discussing energy diagrams a lot in this class, it's a very good way to visualize exactly what's going on.

在这个课里面，我们已经讨论过很多次能量图了，它通常是一个很好的把所发生的事情形象化的方法。

麻省理工公开课 - 化学原理课程节选

I think you should take the lab sometime, but I don't know how many semesters that you have to take.

我觉得你们应该是不是地去做几次实验,我不太清楚你们要上多少个学期的课

耶鲁公开课 - 基础物理课程节选