您已经在该时段安排另一课时。

You have scheduled an another session at this time.

youdao

谈谈镇江的天气，复习上一课时的内容。

What's the weather like in spring in Zhenjiang?

youdao

复习前一课时内容，熟悉班级同学的英语名字。

Let all the Ss practice with their English names.

youdao

Well really, the things we've looked at thus far can you do after just a semester of this kind of material and exposure to this particular world.

当结束这样一门课时,你是不是能通过学习和接触计算机科学,也做出我们刚刚看到的这些东西。

哈佛公开课 - 计算机科学课程节选