一夜难眠的英文：
stay up the night

stay是什么意思：
n. 停留，制止，依靠，支柱
v. 制止，平息，延缓，继续，保持，坚持，忍耐

stationary stay
中心架|固定支柱

Settle down or stay, as if on a roost.
安歇或暂住，好像在栖息所。

He was stayed by the doctor.
他被医生制止了。

I stayed to the end of the race.
我坚持跑完了全程。

These houses stayed up in the quake.
这些房子在地震中没有倒塌。

night是什么意思：
n. 夜晚；黑夜；黑暗
adj. 夜晚的，夜间的

It was an obscure night in early May.
那是五月初的一个朦胧的夜晚。

The landlord bestowed him for the night.
店主留他住一夜。

They pitched up for the night.
他们扎营过夜。

Good night, old sport.
晚安，老兄。

An owl is the king of the night.
猫头鹰是夜晚之王。