auricle

例句：

1. 1.The doctor examined her ears carefully.
   医生仔细检查了她的耳朵。
2. 2. She had a pinna removed during the surgery.
   手术中她切除了一个耳垂。
3. 3.The pinna is responsible for hearing sounds from the outside world.
   耳垂负责从外部世界接收声音。