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

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

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

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