What does "bone up on" mean?

To study hard or review intensively To prepare thoroughly by studying.

How do you use "bone up on" in a sentence?

I need to bone up on my history. Bone up before the exam. She boned up on the regulations.

Phrasal Verb BritishAmericanAustralian ★★★☆☆ Moderate informal

含义: To study hard or review intensively

努力学习或集中复习

Estudiar intensivamente o repasar a fondo

集中的に勉強する、復習する

집중적으로 공부하다, 복습하다

To prepare thoroughly by studying.

通过学习进行充分准备。

Prepararse a conciencia estudiando.

勉強によって十分に準備すること。

공부를 통해 철저히 준비하다.

Base verb: bone

Particle: up on

Separable: No — the verb and particle stay together

I need to bone up on my history.
我需要好好复习历史
Tengo que empollar historia
歴史をしっかり勉強しないと
역사를 열심히 공부해야 해
Bone up before the exam.
考试前要好好复习
Empolla antes del examen
試験前にしっかり勉強して
시험 전에 열심히 공부해
She boned up on the regulations.
她认真学习了规章制度
Ella se empapó de la normativa
彼女は規則を集中的に勉強した
그녀는 규정을 집중적으로 공부했다

语境: studying, preparation, exams

语气: determined

Possibly from using bone to polish, implying polish your knowledge.

Era: Modern

Generation: All ages

Social background: Universal