I'm guessing the average number in the class now is probably about 3 or 4, maybe even lower.

我猜这次的平均数字大约在3或者4,甚至可能更低

耶鲁公开课 - 博弈论课程节选

So I ended up sleeping maybe 4 or 5 hours and going to class.

结果我只能睡四五个小时，然后就要去上课。

耶鲁的忙碌生活 - SpeakingMax英语口语达人

I live in words Backban I walk a great deal, I live in the backban walking into class and home, that's 3 or 4 miles right there.

我生活在文字中,我常常走路，我住在,走来上课,走回家去，我家离这里大概三四英里远。

麻省理工公开课 - 电影哲学课程节选

You can search obviously by any of the fields up top by days ; of the week you want a class; days of the week you don't want a class; grad level or undergrad level, faculty scores that are 4.0 and higher, ; course overall scores that are 4.0 and higher; and a whole number of other features including synchronization with Google calendar.

你可以按日期来搜索网页上的任一科目,以决定哪天去上课，哪天不去上课;,研究生课程或本科生课程,教师打分为4分或更高的课程，课程总学分为4分或者更高的课程;,当然很多其他选择方式,包括Google同步日历。

哈佛公开课 - 计算机科学课程节选