From a distance the many wires look like the stringed musical instrument called the harp.

VOA: special.2009.03.04

He's talking about the harmony that gets produced by a stringed instrument.

他谈到和声通过,弦乐器演奏出来。

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It's a two-stringed instrument that produces a particularly beautiful, vibrant tone.

这是一种两弦乐器,能产生的特别优美,有穿透力的乐音

耶鲁公开课 - 聆听音乐课程节选