名詞 rub up:

1. a review that refreshes your memory

1. I'll have to rub up my mathematics.
   我得把數(shù)學復習一下。
2. If you're to spend a year in the United States, you'd better rub up your knowledge of the language.
   如查你將在美國呆上一年時間，你最好重溫一下你的語言知識。
3. Rub up the skillet please.
   請把長柄鍋擦亮。
4. I am going to rub up the chromium on the car.
   我準備把汽車上的鍍鉻部件擦亮。