向上梳（某物）; 非正温习; 打扮整洁

1. 擦亮;重新学习;复习：brush off 刷去;掸去;拂去 | brush up 擦亮;重新学习;复习 | build up 树立;逐步建立;增大

2. 擦亮：brush up on 温习 | brush up 擦亮 | brush wheel 刷轮

3. 擦亮刷新：brush trace 刷痕 | brush up 擦亮刷新 | brush weir 篱笆渔栅

4. 改进;提高：7. brush brush aside 忽视,置之不理 | brush up 改进,提高 | 8. blow blow off (非正式) 泄气;生气

1. 重温；复习
If you brush up something or brush up on it, you practise it or improve your knowledge of it.

e.g. I had hoped to brush up my Spanish...
我曾打算好好温习一下我的西班牙语。
e.g. Eleanor spent much of the summer brushing up on her driving.
埃莉诺这个夏天大部分时间都在练习驾驶技术。

1. 七彩网.英语单词

verb

1. bring to a highly developed, finished, or refined state

e.g. polish your social manners

Synonym: polishroundround offpolish up

2. refresh one's memory

e.g. I reviewed the material before the test

Synonym: reviewrefresh