pay off 产生利益，出现好结果，偿还债务

Don't worry about me paying off your debt. 不要担心，我肯定会还你钱的。

I've paid off all my debt. 我已经还清了所有的债。

Sending that e-mail has finally paid off. 发送那封电子邮件带来了好结果。

I'm going to pay off my credit card! 我要偿还信用卡借款。

What are you going to do with your tax return? 如果得到税金返还，你要做什么？

I'm going to pay off my credit cards. 我要还信用卡的债。