I wanted to tell you about early because I'm going to ask you to do something for three days and then write about that.

我提早通知大家是因为,我会让你们用三天的时间来做这个

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

The nice thing about this place is that you can find an apartment in three days,

令人高兴的是，在这座城市里不出三天就能找到房子，

找房子不难 - SpeakingMax英语口语达人