It's kind of a stupid lack of feature that this is the case, but notice that here is main, at the top of my file.

这是有点笨的，缺少特征的，就是这种情况，但是注意这里是main函数，在我的文件的顶端。

哈佛公开课 - 计算机科学课程节选

So I'm saving this file, notice there is a few keywords that we'll come back to next week like main which is kind of the main part of my program.

保存此文件，注意这有几个关键字,我们在下周介绍,比如代表程序主体部分的“main“

哈佛公开课 - 计算机科学课程节选