pay back 和 pay off的用法?

pay back 和 pay off的用法? pay,pay for,pay back,pay off,pay back for的用法 pay for 和pay back的区别? 翻译 pay back pay up pay off pay down pay off/back/for/on的区别 pay back 和pay back 区别 pay back和pay off的区别是什么啊.那个有“付出努力,最终得到回报”的意思啊 pay off和pay back选题The teacher's efforts ___when one of his students was admitted to Beijing university last summer.用pay back还是pay off?给我理由. pay off 与pay back 的区别,哪个词组有表示偿还的意思,是pay off吗 中译英：BIill向Marry报复她带给他的一切请用：pay back/ pay off短语 pay off 与 pay off 的区别pay off 做还清意义讲时与pay back 有什么区别..?举几个例句叭.. repay 和pay back pay off与pay for的区别 pay back、pay off二者有什么区别?分别是什么意思? refund是等于pay off还是pay back? pay off compare to.pay off.pay back.pay up.stand for.pick up.join in. pay 和pay for 的异同?