What does "burn the midnight oil" mean?

To work late into the night To stay up working past normal hours.

How do you use "burn the midnight oil" in a sentence?

I've been burning the midnight oil to finish this. Students burn the midnight oil before exams. She burned the midnight oil on the project.

Phrasal Verb BritishAmericanAustralian ★★★☆☆ Moderate Neutral

Meaning: To work late into the night

开夜车，熬夜工作

Trabajar hasta altas horas de la noche

夜遅くまで働く、徹夜で仕事する

밤늦게까지 일하다

To stay up working past normal hours.

超过正常时间熬夜工作。

Quedarse trabajando más allá del horario normal.

通常の時間を過ぎても起きて仕事をすること。

정상 시간을 넘겨서까지 밤늦게 일하다.

Base verb: burn

Particle: the midnight oil

Separable: No — the verb and particle stay together

I've been burning the midnight oil to finish this.
我一直在熬夜完成这件事
He estado trabajando hasta tarde para terminar esto
これを終わらせるために夜遅くまで働いている
이것을 끝내려고 밤늦게까지 일하고 있다.
Students burn the midnight oil before exams.
学生考试前会熬夜复习
Los estudiantes se quedan estudiando hasta tarde antes de los exámenes
学生は試験前に夜遅くまで勉強する
학생들은 시험 전에 밤늦게까지 공부한다.
She burned the midnight oil on the project.
她为这个项目熬了夜
Se quedó trabajando hasta tarde en el proyecto
彼女はプロジェクトのために夜遅くまで働いた
그녀는 프로젝트 때문에 밤늦게까지 일했다.

Context: late work, deadlines

Tone: dedicated

From using oil lamps to work at night.

Era: Modern

Generation: All ages

Social background: Universal