Most people don't tan after just one day at the beach, or one session in the tanning bed, because it takes time to make melanin.

大多数人只在沙滩上玩一天或者使用晒黑床一段时间不会被晒成古铜色的皮肤，因为黑色素的合成是需要时间的。

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I don't know if he'll get better. We're just taking it one day at a time.

我不知道他还能不能好转，我们只有过一天算一天。

《牛津词典》

There was a time when each teacher spent an hour, one day a week, testing students in every subject.

曾有一段时间，每个老师每周都花一小时来测验学生的各门功课。

《柯林斯英汉双解大词典》

One time,Miss Sullivan suggested leaving a problem to solve until the next day.

VOA: special.2009.11.08

Or sometimes they might have men one day, women another time, and mixed at other times.

有时一天男子用，一天女子用，其余时间同用。

耶鲁公开课 - 新约课程节选

but in that time, I'm hoping to set up my life such that one day, in the long term,

但长期以来，我希望有一天能够掌握自己的生活，

事业和人生都重要 - SpeakingMax英语口语达人

We started small, building our company and our brand one book at a time, one day at a time.

FORBES: Entrepreneurial Life: Tales of a Young Bookseller

The truth of "One Day at a Time" was brought home to Franklin when in 2005 she got together with both TV daughters for a "One Day at a Time" reunion special.

WSJ: Bonnie Franklin, 'One Day At a Time' star, dies

The first step to becoming an entrepreneur is deciding that you are going to do something, but to actually become an entrepreneur you must have the strength to tirelessly execute your idea one day at a time, day after day, for as long as it takes.

FORBES: What My Dog Taught Me About Entrepreneurship