Right, having done that, we can certainly get to more complicated things, so for example, suppose I look at that expression.

好，说完了这一点，我们就可以讲些复杂些的话题了，例如，假设我看到了这个表达式。

麻省理工公开课 - 计算机科学及编程导论课程节选

Having done that, I could do the same thing, so I suppose I take this branch, I can pick a spot like, say, this one, and look there.

再从其中随即选取一个元素，比如这一个，请注意，如果相等则结束，如果不相等的话就在它的左边或右边找。

麻省理工公开课 - 计算机科学及编程导论课程节选

So are we having an epidemic of poor diet and what can be done about that?

那么不良饮食也在流行,我们能做些什么

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Okay. So that's the music. Now having done this setup, if you think about it, and think about the fact that what note symbol gets the beat in our course- quarter note, okay.

好,这就是音乐,做过这一套以后,如果你在思考,那么想一想,在我们课程中用来代表节拍的是什么音符,四分音符,好的

耶鲁公开课 - 聆听音乐课程节选

And then I could do things like again, say, okay having done, that let me just run it here, run that, so I've now got polar point 1, and polar point 2.

然后给它们赋值半径和角度，然后我可以进行刚才的操作，也就是说，对刚才的笛卡尔坐标进行的操作，让我们来运行下它吧，运行下，现在我有一个极坐标点。

麻省理工公开课 - 计算机科学及编程导论课程节选