四周有三个不同高度的简易座位。

There are simple seats on three different levels all around the sides.

youdao

中间是一个小圆池，池里有金鱼，四周有扇贝壳边。

In the middle was a small round pond containing gold-fish and surrounded by a cockle-shell border.

youdao

一周有七天。

A week has seven days.

youdao

So, you know, we've got a bunch of juicy topics to dive into this week involving pointers and memory.

这周我们有很多有趣的主题,包括指针和内存。

哈佛公开课 - 计算机科学课程节选

Realize that there's this wonderful mechanism in place that allows you to put your toe in the water for several weeks no less and then get a sense, and then decide whether or not this is something for you.

要知道这种好的评分体制哈佛也有,在这种机制下你可以先试听几周,熟悉这一机制，然后再决定这是否适合你。

哈佛公开课 - 计算机科学课程节选

And for the next, off and on for the next couple of weeks, we'll be talking about Python and program organization.

接下来大概有几周时间，我们将要讨论Pyton语言和程序结构。

麻省理工公开课 - 计算机科学及编程导论课程节选