brush up
US /brʌʃ ʌp/
UK /brʌʃ ʌp/
1.
温习, 复习
to improve one's knowledge or skill in something quickly
:
•
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。