The teaching fellow for each lecture takes what we call scribe notes. These are posted within a few days online.

助教会把每节课讲义记录下来,这些东西几天内就会被发布到网上去。

哈佛公开课 - 计算机科学课程节选

And besides that, lest that not be enough to make sure everyone can succeed in a course like this, we have a very diligent teaching fellow who not only likes to scribe the courses lectures.

另外，为了让大家都能,学好这门课，我们有一个很勤奋的助教,他很乐意记录下课程教案。

哈佛公开课 - 计算机科学课程节选