首先我们来听三度音程。

First let's listen to next interval.

youdao

我们以后会谈到，这其实是个三度音程，它跨越了三个音名。

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.

youdao

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

One more time and we need- we're going to get our third in.

再来一次,我们把三度音程加进去

耶鲁公开课 - 聆听音乐课程节选

So, they had the ratio of two to one, which gave them the octave, and three to two, which gave them the fifth, and four to three, which gave them the fourth.

他们发现,八度音程中,呈现的是二比一的比例,而五度音程中呈现三比二的比例,在四度音程中则呈现四比三的比例

耶鲁公开课 - 聆听音乐课程节选