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

伊娃将演示演奏法国号的物理过程。

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

他们可以压低第十三分音，或者提高第十五分音，从而将单簧管的声音变成圆号的。

He played the French horn in an orchestra.

他在一个交响乐团里演奏法国号。

Yes, but who keeps a Tarot deck under a French horn?

是这样，但是又有谁会把塔罗牌放在法国圆号下面呢？

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。