I know it sounds like a long time,but for it to work...其中for it to work怎么解释,语法上怎么讲?

题目

I know it sounds like a long time,but for it to work...其中for it to work怎么解释,语法上怎么讲?
完整句子：I know it sounds like a long time,but for it to work,that's what you need to do.

答案

我知道这听起来似乎需要很长一段时间,但是为了它能够实现（或者是起作用）,需要你折磨做
为了它能够实现（或者是起作用）：for,为了；it to work:作目的状语