brush up on
片語動詞所屬單字brush
brush up on — 片語動詞
1. To study or practice something again to improve your skill or knowledge.
1.片語動詞
釋義
复习，温习
To study or practice something again to improve your skill or knowledge.
例句
Aiden needs to brush up on his math before the exam.
She brushed up on her French by watching movies.