"All this,in turn, requires something else, which is something more fundamental.

VOA: special.2010.04.17

I don't have to go read what it printed out in the screen. This has returned a value that I can use. Because I could do a test to say, is this a return value? If it's not, I'll do something else with it. So the binding is still there, it simply doesn't print it out.

我不想读到屏幕中打印出来的这行字,程序返回过一个我能够使用的值,因为我可以做个小测试，来说明这是否是返回的值，如果不是，我可以做一些其它的事,而这个绑定依然在这儿，没有打印任何东西。

麻省理工公开课 - 计算机科学及编程导论课程节选

If something is true do this, else something is true, do that.

如果某些条件是真的，就做这件事，否则另外一些条件为真的话就做另外一件事。

哈佛公开课 - 计算机科学课程节选

This is not something that's about someone else.

这不是别人的事情。

普林斯顿公开课 - 人性课程节选

So if this is true do something else, true otherwise test and see if this is true, do something else, as many as I like followed by the end.

因此如果结果为true那么做一些操作，否则的话再看看这个表达式的值是不是，如果是的话做另外一些操作，我想要多少后面就可以跟多少。

麻省理工公开课 - 计算机科学及编程导论课程节选