What does "brush up" mean?

To improve or refresh knowledge or skills To practice something you learned before but haven't used recently.

How do you use "brush up" in a sentence?

I need to brush up on my French. She brushed up her typing skills. Time to brush up before the exam.

Phrasal Verb BritishAmericanAustralian ★★★★☆ Common Neutral

Meaning: To improve or refresh knowledge or skills

复习，温习

Refrescar conocimientos o habilidades

知識や技術を磨き直す

지식이나 기술을 다시 갈고닦다

To practice something you learned before but haven't used recently.

提高生疏的技能。重新学习以前学过的东西。

Mejorar habilidades oxidadas. Repasar algo aprendido anteriormente.

錆びついた能力を改善すること。以前学んだことを復習する意味。

이전에 배웠지만 최근에 사용하지 않았던 것을 연습하다.

Base verb: brush

Particle: up

Separable: No — the verb and particle stay together

I need to brush up on my French.
我得复习一下西班牙语
Necesito refrescar mi español
スペイン語を復習しないと
프랑스어를 복습해야 해.
She brushed up her typing skills.
她重新练习了打字技能
Refrescó sus habilidades de mecanografía
彼女はタイピング技術を磨き直した
그녀는 타이핑 실력을 다시 갈고닦았다.
Time to brush up before the exam.
考试前复习一下
Repasad antes del examen
試験前に復習しておいて
시험 전에 복습할 시간이다.

Context: revision, improvement

Tone: diligent

From brushing to clean or polish.

Era: Modern

Generation: All ages

Social background: Universal