There's a very thin line between the two and we therefore use the same pedagogical methods in the sense that we've got to do the following.

两者之间的差别很微妙,因此我们接下来要做的,就是采用与语言课相同方法教学

耶鲁公开课 - 聆听音乐课程节选

We should call it E-flat and put it up on the E line because there's kind of rule here that you have to use up each letter name in turn, each letter name in turn.

我们应该称之为降E,把它放在E的谱线上,因为这算是一个规则,要依次使用每个字母,依次用每个字母

耶鲁公开课 - 聆听音乐课程节选