By pulling a string, it vibrates and produces a sound wave, which passes through a piece of wood called a bridge, and goes down to the wood box and gets amplified, but ... let me think.
通过拉弦，弦产生震动。 结果产生一种声波。 声音通过称为琴马的木板 进入木盒，然后得到放大。 可是⋯让我想想。