"For me,I think it was more difficult because I dealt with the guilt of missing my child, having him so far away, then always trying to get home on the weekends to see him, as well as keeping up with school and remaining active,"

VOA: standard.2009.12.04

So, given the set-up, you kind of feel what you're missing, you know, what this home pitch is-- the pitch to which you are gravitating.

那么,根据规律,你发现缺点了什么,基本的音高是,那个吸引你的音高

耶鲁公开课 - 聆听音乐课程节选