New things emerge day after day.

新的事物每天都在出现。

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She hates doing the same work day after day.

她讨厌日复一日做同样的工作。

《牛津词典》

The newspaper job had me doing the same thing day after day.

这份报业的工作让我日复一日地做同一件事情。

《柯林斯英汉双解大词典》

Borman and Lovell continued to circle the Earth, day after day, as workers hurried to meet the new launch date.

VOA: special.2009.07.01

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

She starts at the beginning of her day and goes through task after task, chore after chore, project after project

她从一天的开始说起，从一个任务说到另一个任务，从一件杂活说到另一件杂活，从一个项目说到另一个项目。

It sounds like 课堂 - SpeakingMax英语口语达人

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

FORBES: Student Loan Bubble Sets Up To Be Subprime Disaster Part Deux

Does that mean they deserve to live in abject poverty while slaving away day after day?

FORBES: When Is It Not Your Fault?

Price canvassed for Obama alone day after day, with a can of Mace in the car.

NEWYORKER: The Hardest Vote