cartilage of external acoustic meatus

例句：

1. 1. The doctor removed the damaged cartilage to repair the joint.
   医生移除了受损的软骨以修复关节。
2. 2.The patient was advised to avoid activities that could damage the cartilage.
   患者被建议避免可能损害软骨的活动。
3. 3. The researcher studied the structure and function of human cartilage.
   研究者研究了人类软骨的结构与功能。