Five hours is contact time. That's three hours here, and two hours with the recitation instructor.

联系时间是5个小时，这有三个小时，其余2小时是和背诵课的讲师。

麻省理工公开课 - 固态化学导论课程节选

But I mean, when you're on campus, except for Fridays are pretty dead obviously.

但我的意思是说，在校园里，除了周五，其余时间都很安静。

关于旧金山大学校园 - SpeakingMax英语口语达人

Or sometimes they might have men one day, women another time, and mixed at other times.

有时一天男子用，一天女子用，其余时间同用。

耶鲁公开课 - 新约课程节选

And then in the intervening periods, they are on distant learning modules that the students complete.

其余时间，学生通过远程学习模式完成。

哈佛公开课 - 幸福课课程节选