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1·We did Tokyo in three days.

我们在东京游览了三天。《牛津词典》

2·The report is due in three days.

报告必须在三天后交。

3·Some seeds may germinate in three days even if they have been exposed to very low temperatures for a long time.

即使长时间暴露在极低的温度下，有些种子也能在三天内发芽。

4·I've hardly slept in three days.

我3天之中几乎没睡。《柯林斯英汉双解大词典》

5·The top general was told to go out and find a happy man in three days.

最高上将被要求在三天内找到一个快乐的人。

6·Get the job done in three days.

尽着三天把事情办好。《新英汉大辞典》

7·There will be a storm in three days.

未来三日内将有暴风雪。《新英汉大辞典》

8·It will be a long hike, 30 miles in three days.

这将是一趟长距离的徒步旅行，三天走30英里。

9·In three days, it was re-posted over 100,000 times.

在三天内就累计发布了10万次之多。

10·It was the third such school attack in three days.

这是3天里攻击学校的的第三次。