day and night

day and night
日日夜夜
Our parents are worrying about us day and night.
父母亲日日夜夜地为我们操心受累。
The days and nights were a blur of medical reports.
日日夜夜都是治疗报告。
I wish he'd desist from entertaining his friends at all hours of the day and night.
但愿他别再昼夜不分地招待他的朋友。
The enemy kept up their bombardment day and night.
敌军一直日夜不停地狂轰滥炸。
He worked hard day and night.
他日夜努力工作。