The outer ear (the pinna) receives a single sound wave composed of different sounds.
The outer ear (the pinna) receives a single sound wave composed of different sounds.
外耳（耳廓）收集含不同声音的单声波。
The outer ear (the pinna) receives a single sound wave composed of different sounds.
外耳（耳廓）收集含不同声音的单声波。