日日夜夜的英文：
day and night; night and day; by day and by night
- The days and nights were a blur of medical reports.
日日夜夜都是治疗报告。 - For all the nights that were filled with dread, and for the worries I knew were ahead, No Charge.
为充满恐惧和担心的日日夜夜，一分都不收。 - These men bear this problem in their hearts and their hearts and their brains, by day and by night
这些人日日夜夜把这个问题放在心中，记在脑里。
n. 一天；白昼，白天；工作日；时代，时期
- Things go on day by day.
事情逐日进行着。 - Day by day the situation is improving.
情况在一天天地好转。 - Like this, day after day.
就这样，日复一日。 - It was a fateful day.
那是个不祥的日子。 - Meantime, from day to day they endure.
同时，一天天他们捱了下去。
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。