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。

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He played the French horn in an orchestra.

他在一个交响乐团里演奏法国号。

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A long time ago, in a place far, far away, I played the French Horn.

很久以前，在一个遥远的地方，我演奏圆号。

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Orchestra member Lizzie Culberston plays the French horn.

VOA: special.2010.06.21

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

There are larger physical challenges as well, since Wagner tuba players double on the French horn during the "Ring" when needed.

WSJ: It Takes Brass to Play the Wagner Tuba | By Barbara Jepson | The Ring of the Nibelung

Because of its range and mouthpiece, this tuba-shaped hybrid is actually played by members of the French horn section, but never mind.

WSJ: It Takes Brass to Play the Wagner Tuba | By Barbara Jepson | The Ring of the Nibelung

This can be done using either valves as on the French horn, trumpet, and tuba or a slide, as on the trombone.

NPR: Young Tuba Player Gets Nod from Phila. Orchestra