That example I gave last time with the bicycle pump was not quite the right example.

上次我举打气筒的例子,是不太恰当的。

麻省理工公开课 - 热力学与动力学课程节选

It's like you have more skateboards than there are days in a year.

恰当的例子是你的滑板多到,每天用一个都不重样。

耶鲁公开课 - 公正课程节选