Troops patrolled the border day and night.

军队日夜在边境地区巡逻。

《牛津词典》

In theory I'm on call day and night.

理论上，我不分昼夜随叫随到。

《柯林斯英汉双解大词典》

When a company goes down, the administrator must respond —and this could easily mean any time of day, night, or week.

当一个公司业绩下滑时，管理者必须做出反应——这可能意味着白天黑夜或者周末的任何时候都得上班。

youdao

in the day and in the night-time, sometimes moonlight, sometimes storms, and we a-floating along, talking and singing and laughing.

VOA: special.2010.03.21

This modern festival of African-American culture includes lighting candles each night from December twenty-sixth through New Year's Day.

VOA: special.2009.12.21

"I felt guilty day and night - what I was doing was not right.

VOA: special.2009.01.03

Based on computer modelling, the craft QinetiQ has developed thus far could complete a day-night cycle.

BBC: NEWS | Science/Nature | 'Eternal planes' to watch over us

The second match takes place in Nagpur on Wednesday and is another day-night contest.

BBC: Australia beat India in thriller

Pietersen himself gave a man-of-the-match display, which included two wickets and an unbeaten 90 during England's 20-run day-night victory.

BBC: Pietersen hails Flintoff's return