Expect the address of an int but here in the context of the function itself inside the curly braces, it means go to that address.

一个整型数的地址，但是在函数,大括号中的环境中，意思是定位到那个地址。

哈佛公开课 - 计算机科学课程节选

When you think about an int or a float or a dictionary or a list, you knew that there were functions that operated on them.

当你想到整型，浮点型，或者链表时,你知道可以用函数去处理他们,但是当你传递一个参数，例如链表。

麻省理工公开课 - 计算机科学及编程导论课程节选