我很少在凌晨2点前睡觉。

I seldom go to bed before 2 a.m.

youdao

她以前经常在笔记本电脑前工作到凌晨4点钟。

She used to work at her laptop until four in the morning.

《柯林斯英汉双解大词典》

日本人同样聚集在电视机前，尽管比赛开始时间已经是当地时间凌晨4点。

Japanese residents were also glued to their televisions, despite the game starting around 4 a.m. local time.

youdao