We could also take the two eighth notes and divide them into two sixteenth notes and then we get one-a-an-d-two-a-an-d- one-a-an-d-two-a-an-d something like that.

我们也可以继续将八分音符,分为两个十六分音符,一二三四,二二三四,一二三四,二二三四,就像这样

耶鲁公开课 - 聆听音乐课程节选