We'll be talking about the fact that this is an interval of a third; it spans three letter names a little bit later on.

我们以后会谈到,这其实是个三度音程,它跨越了三个音名

耶鲁公开课 - 聆听音乐课程节选

Then the next pitch on the trumpet is actually an interval of a fifth.

然后下一个音高在小号那里,实际上是一个五度音程

耶鲁公开课 - 聆听音乐课程节选

An interval is over a period of time.

时间强化则是间隔一定时间才给予奖励。

耶鲁公开课 - 心理学导论课程节选

So in this 40-minute interval we've gone sort of through an emotional musical journey here from despair, despondency, uncertainty, to whatever- to personal triumph, and in a way that mirrors some of the things that were going on in Beethoven's life.

在这四十分钟的乐曲里,我们走完了一趟情感丰富的音乐旅程,从消沉沮丧,到半信半疑,再到个人胜利,其实在某种意义上也反映了事实,贝多芬的人生,也将经历相似的历程

耶鲁公开课 - 聆听音乐课程节选