辨析put off/call off/pay off

问题描述:

辨析put off/call off/pay off
请问三者的差别,谢谢啦

put off 拖延
Don't put off until tomorrow what can be done today.
不要把今天能做的事情拖到明天去做.
call off 取消
pay off还清债务
Well ,after these years,we've at last paid off all our debts.
好了,经过这么多年,我们总算把所有的债务还清了.