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1·Troops patrolled the border day and night.

军队日夜在边境地区巡逻。《牛津词典》

2·Police frequent the area day and night.

警察日夜在这个地区巡逻。

3·Lady Meng Jiang waited for her husband day and night.

孟姜女日夜等着她的丈夫。

4·She has been working hard day and night, which of course, accounts for her pale face.

她夜以继日地努力工作，这当然是她脸色苍白的原因。

5·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》

6·They were hounded day and night by the press.

他们日夜遭到新闻界的跟踪。《牛津词典》

7·The enemy kept up the bombardment day and night.

敌人昼夜不停地狂轰滥炸。《牛津词典》

8·The factory's machinery pounded away day and night.

工厂的机器昼夜轰隆作响。《牛津词典》

9·She thinks she can call me at all hours of the day and night.

她以为她可以不分昼夜随时给我打电话。《牛津词典》

10·Dozens of doctors and nurses have been working day and night for weeks.

很多医生和护士夜以继日地工作了几周了。《柯林斯英汉双解大词典》