difference of a function的意思|示意

In terms of the way it is called, there is no difference between a system call and a library function.

就调用方式而言，系统调用与库函数之间没有区别。

In other words, the difference in the chemical potential is, this changes as a function of pressure.

换句话说，化学势之差等于，这个差值随着压强的变化。

This difference is important when you write functions that are supposed to modify lists. For example, this function does not delete the head of a list.

这以区别相当重要，尤其是当你写一些要修改列表的函数的时候。比如下面这个函数并没有能够删除列表的第一个元素。