pay off—phrasal verb with pay verb取得成功，得到好结果。If something you have done pays off, it is successful.
pay sb off 1）付清工资后遣散（某人）；2）用钱封住（某人）的嘴，收买（某人）。
【例句】
All her hard work paid off in the end, and she finally passed the exam.
她的所有努力最终得到了回报，她终于通过了考试。
There were rumours that key witnesses had been paid off to keep quiet.
传言说关键证人都被收买，不肯出面作证。
【例句】
All her hard work paid off in the end, and she finally passed the exam.
她的所有努力最终得到了回报，她终于通过了考试。
There were rumours that key witnesses had been paid off to keep quiet.
传言说关键证人都被收买，不肯出面作证。
