Swan says his early mentors instilled in him a simple environmental ethic that has guided him through life: "That was that at the end of our expeditions, we would always leave wherever we went,clean and tidy, take away our garbage, take away everything, just leave our footsteps."

VOA: standard.2009.12.10

How many of you have a written contract, stuck with a magnet on the fridge, telling you when you're supposed to tidy up.

有人写过协议吗,在冰箱上贴个磁力贴,规定好什么时候该谁打扫房间

耶鲁公开课 - 博弈论课程节选

I mean, you'll get some people who look very preppy and really clean and tidy, and well-presented.

我的意思是，你能看到一些人看起来非常干净整洁，表现出色。

想成为引领时尚的人 - SpeakingMax英语口语达人

The best thing for you is to have the other guy tidy up and the worst thing for you is to tidy up for the other guy.

让别人去打扫卫生是你最希望的结果,你为大家打扫卫生是你最不希望的结果

耶鲁公开课 - 博弈论课程节选

If the other guy doesn't tidy up, you're best off not tidying up either, because the last thing you want is to be tidying up for the other guy.

如果别人不打扫,你最好也别打扫,因为你最不想干的事,就是为别人打扫卫生

耶鲁公开课 - 博弈论课程节选

Why is it disgusting? It's disgusting because people don't tidy up.

为什么会很脏乱啊,因为没人打扫啊

耶鲁公开课 - 博弈论课程节选

But why don't they tidy up? Well let's just work it out.

为什么你们不打扫啊,我们来分析一下

耶鲁公开课 - 博弈论课程节选

You'd like to have the other guy tidy up, right?

你们指望别人去打扫卫生,对不对

耶鲁公开课 - 博弈论课程节选

And if the other guy does tidy up, hey the room's clean, Who cares? So either way, you're not going to tidy up and you end up with a typical Yale dorm room.

要是别人打扫完了,屋子干净了,我赚了,最后谁都不去打扫寝室,寝室当然就脏了

耶鲁公开课 - 博弈论课程节选