吃透英语课本，提升在校竞争力
phrase. 还清；得到回报；取得成功
It would take him the rest of his life to pay off that loan.
还清那笔贷款将花费他的余生。
Sandra was determined to become a doctor and her persistence paid off.
桑德拉决心成为一名医生，她的坚持不懈终于带来了成功。
payoff function
支付函数
已安全检测