small hours 凌晨时分

The small hours refer to the early hours of the morning, after midnight and before dawn.small hours是指过了午夜，但在黎明之前的那段时间。也可以说“wee hours”。

Examples:

Inspiration is easily being sparked in the wee small hours of the day. 凌晨时分，灵感很容易被激发。

I stay up very late at times into the small hours. 我有时熬夜到很晚，过了半夜才睡。