The ends are fixed. That is all I am doing.

结果是的固定的，这就是我将要做的。

麻省理工公开课 - 固态化学导论课程节选

Okay. Now this gentleman out here is actually doing it different from what I am doing and what most of you are doing but you know what? He's doing it correctly.

这位先生,和我做的不太一样,甚至和在座各位做的不太一样,但你知道吗,他做的是对的

耶鲁公开课 - 聆听音乐课程节选