catch up on的用法和样例：
例句
- Just bung in some old bricks to fill up the hole.
只要填些旧砖就可以补上这个洞。 - I have to catch up on my work so I can't come out.
我要把工作补上，不能出去了。 - Staff must stay behind after hours to catch up on their work.
下班後工作人员需要留下来把工作赶完。 - Twenty minutes in the car ate up the distance between the two shipyards.
乘二十分钟汽车，就赶完了两座船厂之间的路程。
词汇搭配
- catch up on 补上
