You want a career in the Mercury Theatre and in everything else I plan to do, then remember one simple rule: I own the store.

VOA: standard.2009.12.17

Light travels basically a foot in a nanosecond. Simple rule of thumb.

光行进的速度是每纳秒一英尺,很简单的经验法则了。

麻省理工公开课 - 计算机科学及编程导论课程节选

A very simple language. And one rule.

简单的语言,只有一条规则

耶鲁公开课 - 心理学导论课程节选