So for example I defined p, remember back over here, as a Cartesian point, but I can actually ask for its polar form.

我可以要求返回它的极坐标形式，这里对我是可访问的，好，这很棒，请再记另外一个为什么。

麻省理工公开课 - 计算机科学及编程导论课程节选

And in that emphasis on the dark side of schooling, should give pause to adults who were looking for an understanding of why something like Columbine comes about.

这一对学校黑暗面的控诉，应该给成年人们敲了一记警钟,尤其是那些在探讨,为什么会有科罗拉多可伦拜枪杀案这样的事件。

麻省理工公开课 - 媒体、教育、市场课程节选

How was it that the people can see what's good around and yet not do it.

人们能够看到周围可做的善事,但为什么都不去做呢？

普林斯顿公开课 - 人性课程节选

Why might repeatability be an issue?

为什么可重复性也可能是一个问题呢？

麻省理工公开课 - 计算机科学及编程导论课程节选