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

It is nowhere on this interval.

它不在这段间隔时间。

麻省理工公开课 - 固态化学导论课程节选