late into the night 到深夜；熬夜；夜深人静

【例句】
He would often be working away on his word processor late into the night.
他经常在文字处理机上一直工作到深夜。

There would be plenty of good and delicious foods around and the merry making would last till late into the night.
将会有很多很好的和美味的食品的欢乐和周围制作将持续直到深夜。