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

that they go, "okay, yeah, yeah. I'll meet you on Sunday." and they find some reason not to do it.

他们嘴上说着：“好的，我会在周日见你。”但到时候又不这么干了。

欧洲和美国的差异 - SpeakingMax英语口语达人

You can very quickly drive yourself nuts by sitting down, thinking, oh, I can write this program, no sweat, and then you write it and then there's a tiny little mistake here, but then there's a tiny little mistake here and here, and all of these stupid little things cascade until you try running your program, and the thing just doesn't work.

如果你只是仅仅干坐着，不费吹灰之力，凭空幻想着我可以把这个项目搞定，你会想地发疯的，也许你会写出一点东西出来，可能会有一点点错误,紧接着这或那又出现一点小错误，这些小错误一点一点地堆积了起来,直到你开始运行你整个项目，你会发现这堆东西根本就不工作。

哈佛公开课 - 计算机科学课程节选

There's this whole sense that the thing is precarious and you'd better kind of mind your Ps and Qs, or whatever the expression is, and be a good person or this whole thing could kind of be literally flooded away.

从这个场景中可以看出堤坝相当不稳定,你最好想想干过什么缺德事儿,或者捅过什么篓子之类的,总之得做个好人,否则,这整个城市就可能真会被大水冲走

耶鲁公开课 - 欧洲文明课程节选