brush up
US /brʌʃ ʌp/
UK /brʌʃ ʌp/

短语动词
1.
温习, 复习
to improve one's knowledge or skill in something quickly
示例:
•
I need to brush up on my Spanish before my trip to Mexico.
去墨西哥旅行前,我需要温习一下我的西班牙语。
•
She decided to brush up on her coding skills.
她决定温习一下她的编程技能。
在 Lingoland 学习这个单词