rub up

名词 rub up:

1. a review that refreshes your memory

1. I'll have to rub up my mathematics.
   我得把数学复习一下。
2. If you're to spend a year in the United States, you'd better rub up your knowledge of the language.
   如查你将在美国呆上一年时间，你最好重温一下你的语言知识。
3. Rub up the skillet please.
   请把长柄锅擦亮。
4. I am going to rub up the chromium on the car.
   我准备把汽车上的镀铬部件擦亮。