xiǎo tí qín / de / qín xián / shì / fā yīn tǐ / gōng máo / mó cā / qín xián / hòu / huì / chǎn shēng / shēng yīn

小提琴的琴弦是发音体，弓毛摩擦琴弦后会产生声音。

The strings of a violin are sound-producing bodies, and rubbing them with the bow hair produces sound.