The most common topics they discussed included kids' sleep, nutrition, discipline, behavior problems and day care and preschool.

他们最常讨论的话题包括孩子的睡眠、营养、纪律、行为问题，以及日托班和幼儿园。

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The machines are kept running night and day.

这些机器夜以继日地运转着。

《牛津词典》

Day in and day out, the flat crack of the tank guns reverberates through the little Bavarian town.

日复一日地，单调的坦克炮的轰隆声在巴伐利亚的这个小镇上空回响着。

《柯林斯英汉双解大词典》

There were many changes in the social customs and day-to-day life of millions of Americans during the administration of President Calvin Coolidge.

VOA: special.2011.01.06

And I was actually thinking that after day in and day out, I had different idea that I wanted to do and I was going to scrap it after that.

我时刻都在思索，当有了新的想法，我就有冲动,丢下这个网站，去实践新点子。

斯坦福公开课 - 扎克伯格谈Facebook创业过程课程节选

and then one day I'll be like, "Oh, I want to dress like a clown today, so I will."

而可能有时候，我想，“喔，今天我想打扮成一个小丑，然后我就这么做了。”

时尚让人兴奋 - SpeakingMax英语口语达人

You need to explain the higher purpose of what everyone does day in and day out.

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Day after day stocks have been falling, and day after day has come more bad news.

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The same pattern will repeat itself tomorrow, and the next day, and the day after that.

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