And just as with variables, you should use some common sense, some style here, and the function's name should X Y communicate what it does, calling it X or Y or Z is generally not all that helpful.

就像变量，你使用一些常识，一些类型，和函数名需要,传达它所做的事情，把它叫做,或者Z通常是没有什么用处的。

哈佛公开课 - 计算机科学课程节选

It adds x to y and stores it into z. But if someone wants to be a even a little more snarky, what does this program do?

它把x加上y，再把结果存到z中，但是如果有人,想要做的有点不合常理点呢，那这个程序会做什么？

哈佛公开课 - 计算机科学课程节选