1. hook up again: [美俚]破镜重圆，终归于好

eg. I was kinda hoping we could hook up again!
我希望我们能够重新来过！

2. in case: 假如

eg. In case I forget, please remind me of my promise.
假如我忘记了， 请提醒一下我的诺言。

3. hold on a moment: 等一会儿

eg. Mr. Smith is speaking on another telephone. Could you hold on a moment?
史密斯先生正在接另一个电话，您可以稍候一下吗？

4. pay off

(1) 还清

eg. 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。

(2) （某行动）取得成功；带来好结果

eg. 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。