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

The first reading is available online and I'll talk more about the readings when I get to that portion of the lecture here.

第一份阅读材料也已经在网上了,关于这个阅读材料,在这堂课的相关部分时我会再讲到它

耶鲁公开课 - 生物医学工程探索课程节选