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- Pay back an obligation 还人情。
- Repay(or requite; pay Back)an obligation 还人情债
- You have an obligation to pay your debt to society. 你有义务偿还对社会的债务。
- Pay back the5,000 Yuan I loan you by today. 我借给你的5,000元，今天还我吧。
- He will pay back the money in monthly installment. 他将用每月分期付款方式将钱付还。
- Every inhabitant here has an obligation to pay taxes. 这里的每一位居民都有纳税的义务。
- He will pay back the money in monthly instalment. 他将按月分期付款的方式偿还。
- She's under an obligation to him because he lent her money. 因为他把钱借给她了，所以她有偿还他的义务。
- Damaging the goods puts you under an obligation to buy them. 你损坏了这些商品，你就得都买下来。
- Well, I had an obligation to fulfill and I came back to fulfill it. 我有义务需要完成，我回来尽义务。
- Don't forget to put the clock back an hour tonight. 请不要忘了今晚把钟拨慢一个小时。
- To pay off(a debt, a claim, or an obligation); settle. 清偿偿还（债务、索赔或义务）；解决
- Chou En-lai sent back an acerbic letter. 周恩来回复了一封尖刻的信。
- I lent him some money last week but he forgot to pay back. 上周我借了一些钱给他，但他忘记归还。
- I have an obligation to tell you the truth. 我有义务告诉您真相。
- The sum was paid back to the bank with interest. 这笔款子连本带息还给了银行。
- I'm under an obligation not to compromise with her. 我有义务不同她妥协。
- The dinner was put back an hour. 晚饭推迟一小时。
- I am afraid you are under an obligation. 恐怕您有义务把这些干柴劈成小块。
- He promised to pay back this week. 他答应本周内还钱。
