pay off,付清工资;债务a. to pay (someone) everything that ** due that person, esp. to do so and d**charge from one's employ.b. to pay (a debt) in full.c. **rmal. to bribe.d. to retaliate upon or pun...
pay--用于名词指工资,收入.用于动词指“支付”后面接支付的对象(人)pay for--偿还,后面接支付的物,不接人.pay back--也有偿还的意思,但与pay for 相比有“投资回报”的意思,所以也衍生出“报答”“报复”的意思.pay off--还清pay back for-- pay back + for,后面接得到回报的原因.