burn the midnight oil
US /bɜːrn ðə ˈmɪd.naɪt ˌɔɪl/
UK /bɜːrn ðə ˈmɪd.naɪt ˌɔɪl/

1.
熬夜工作, 開夜車
to work late into the night
:
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I had to burn the midnight oil to finish the report on time.
我不得不熬夜工作以按時完成報告。
•
Students often burn the midnight oil before exams.
學生們在考試前經常熬夜學習。