Now in this case, it's clear that I'm not only saying this function takes an input, I also have to give that input a name.

在这种情况，很清楚的,我不只是说明这个函数有一个输入，我还要给那个输入一个名字。

哈佛公开课 - 计算机科学课程节选

It's very clear I've got to start with a function that looks like t^.

显然,我得从一个类似与t^的函数开始

耶鲁公开课 - 基础物理课程节选