偿付, 报答, 报复【经】 付还, 偿付, 报酬率

pay for/pay off/pay back
We've already paid for the recorder.这架录音机我们已经付款了。
We've at last paid off all our debts.我们总算把所有的债都还清了。
They had to pay back the money they had borrowed.他们不得不归还所借的钱。
<辨析>pay for 意为“付......款”(give money for)，其宾语通常是表示物件或东西的名词或代词。pay off 意为“偿还（债务等）”(pay all that is owed on a debt,etc.)。pay back 意为“归还（所借的钱）”(return money that has been borrowed)，有时后面跟表示“债务”的名词，作“偿还（债务）”解。如：You ought to pay back your debts.你应当偿还你的债务。这两个短语中的 off 与 back 可与 pay 拆开使用，跟代词作宾语时，必须将代词放在两者之间。