to burn the midnight oil 开夜车

表达 to burn the midnight oil 的字面意思是“烧午夜的油”，我们用这它来表达一个人“挑灯夜战，开夜车”，熬夜学习或工作。

例句

She had to burn the midnight oil to get the report done on time.

为了按时完成那份报告，她不得不工作到深夜。

He was burning the midnight oil studying for his exam.

他为了准备考试学习到很晚。

I was burning the midnight oil last night: I only got two hours' sleep.

昨晚我工作到很晚，只睡了两个小时。