开小差的比例居高不下。

Desertion rates are high.

youdao

上课是要开小差的，在老师没注意的情况下，从窗口往下看。

Have a class with absent minded, watching downwards from the window.

youdao

士气似乎仍然高昂。开小差的比例上升了，但只限于走得动的。

Morale still seems reasonably high and, while the desertion rate has risen, it is still limited to those who can walk.

youdao

And as an aside, those in the room who are among those more comfortable, even if we're not quite filling in blanks today, realize we will very quickly entice you with details that you don't already know.

说句题外话，你们中有一些,看起来聚精会神，实际上开小差的同学，也许我还不能对号入座，但这些人必须意识到，我会一笔带过,一些你们可能不懂的问题。

哈佛公开课 - 计算机科学课程节选

But just go to cs50.net, click office hours and you'll see the Google Calendar with all of the office hours that are still happening tonight, as well as tomorrow and these are just an opportunity to chat, to ask questions one on one with the teaching fellows or course assistants or frankly just a way to hang out during brain break and work on projects and then see what some of your friends might be tackling themselves.

但是我要提醒大家去cs50，net网站看看,这里清清楚楚告诉你,什么时候该学习工作，当然也包括今晚的明天的，我们还有一个机会供，一个与研究生助教或课程辅导员交流的机会,更直白来说,是提供你们开小差的机会,看看你们周围哪些人,在开小差呢。

哈佛公开课 - 计算机科学课程节选