The police caught two thieves the day before yesterday.

前天警方抓到了两个小偷。

youdao

To think I was lying on a beach only the day before yesterday.

想想吧，就在前天，我还躺在海滩上呢。

《牛津词典》

The day before yesterday is Wednesday.

前天是星期三。

youdao

You had a semiotic system, whereas before, yesterday, or a minute ago you had no language at all.

一个符号系统诞生了，然而之前，昨天，或者就是一分钟前，根本就没有语言。

耶鲁公开课 - 文学理论导论课程节选

After a while, part of you is going to start asking, "Huh, say, it feels the same as it was yesterday, and the day before that and the day before that.

经过一段时间后，你会开始产生置疑，“原来和昨天的感觉一个样，和之前每一天的感觉都一样。

耶鲁公开课 - 死亡课程节选

Although, I think a lot of politicians over here have seen that already, beginning before yesterday.

NPR: Europe Reacts with Relief, Optimism to U.S. Changes

If he hadn't already -- I understand right now that he was probably already dead before yesterday.

CNN: Spann's father: Pride, sorrow, anger

He has been described as the "day before yesterday's man" - and the rest of the convention does not do much better.

BBC: Analysis: EU gets down to business