" Don't involute yourself, " her classmates told her.

“不要自欺欺人， ” 她的同学告诉她。

This video by Gergely Bencsik about how involute gears work had a really satisfying way of explaining why a certain gear design pattern works so well that for me at least just stuck.

Gergely Bencsik 制作的这段关于渐开线如何工作的视频以一种非常令人满意的方式解释了为什么某种模式如此有效，至少对我来说只是卡住了。