brush up on
brush up on skills
brush up on English
A: Are you ready for the interview?
A：你准备好面试了吗。
B: Not really. I need to brush up on my coding skills.
B：还没。我需要温习一下我的编程技能。
1) 温习，复习
2) 提高，磨炼
1. 温习，复习
phrasal verb
1. to improve your knowledge of something that you have already learned but partly forgotten
Synonym: refresh, review