A small wind instrument for making whistling sounds by means of the breath.
A small wind instrument for making whistling sounds by means of the breath.
口哨；哨子一种很小的吹奏乐器，通过呼吸而发出哨声
A small wind instrument for making whistling sounds by means of the breath.
口哨；哨子一种很小的吹奏乐器，通过呼吸而发出哨声