to brush up
[phrase form: brush]
01
温习, 更新知识
to practice and improve skills or knowledge that one has learned in the past
Transitive: to brush up a skill or knowledge
例子
It 's a good idea to brush up on your driving skills before the road trip.
在公路旅行之前复习一下你的驾驶技能是个好主意。
02
擦亮, 清理
to make something better as if by polishing and removing dust
Transitive: to brush up a surface
例子
The jeweler carefully brushed up the silver necklace, removing any tarnish.
珠宝商仔细地擦拭了银项链，去除了任何污渍。
