So Eva is going to just demonstrate the physical process of playing the French horn.

伊娃会为我们讲解,演奏法国圆号的物理过程

耶鲁公开课 - 聆听音乐课程节选

They can push down the thirteenth partial and bring up the fifteenth and thereby change the sound of a clarinet into a French horn.

压低第十三分音,或者提高第十五分音,从而将单簧管的声音变成圆号的

耶鲁公开课 - 聆听音乐课程节选

This is my friend, long-time colleague, music librarian extraordinaire and professional French horn player, Eva Heater, who will demonstrate here-- Come on over here right in the center.

这位是我的朋友,长期共事的同事,音乐图书管理员,了不起的专业法国圆号手,伊娃·夕瑟,她将在此演奏,过来,站到中间来

耶鲁公开课 - 聆听音乐课程节选

Think of these poor French horn players in the orchestra.

想象一下管弦乐团中可怜的圆号手

耶鲁公开课 - 聆听音乐课程节选