And here, I'm going to suggest we've seen numbers, we've seen strings, and I'm going to add Booleans here as well.

我要提醒下大家我们学习过数字数据了,学习过字符串了，今天还要学习布尔类型，这是当我们谈到条件的时候。

麻省理工公开课 - 计算机科学及编程导论课程节选

There are problem in that a horse must be treated when we study rigid bodies.

当我们学习刚体的时候,把马看做什么就是个问题了

耶鲁公开课 - 基础物理课程节选