Typically, a hook will call the original function at some point in order to preserve the original behavior.

一般，挂钩还会调用原先的函数，目的是维为了持原来的行为。

youdao

In this case the returned function object is a closure which encapsulates some logging code and the data needed to call the original function.

这种情况下返回的函数对象就是一个闭包，其中封装了一些日志代码和最初的函数调用所需要的数据。

youdao

That command is simply a call to the built-in setpos function, passing the value the original information from the earlier call to getpos .

该命令仅调用内置的setpos函数，将原始的值信息从先前的调用传导到getpos 。

youdao