in the third part. "We let our hair down and rocked as much as we were able and swung as much as we were able."

VOA: standard.2010.07.28

So we gonna back up in that previous variation Let's just see if we can pick up what the missing third part here.

我们要回到刚才的变奏,看看我们能不能捕捉到,缺失的第三部分

耶鲁公开课 - 聆听音乐课程节选

And then the third law comes in, and that's the depressing part here.

然后第三定律跳出来，这里就是杯具的所在。

麻省理工公开课 - 热力学与动力学课程节选