1. Tympanosclerosis is a condition characterized by the abnormal hardening of the eardrum.
中耳硬化症是一种以鼓膜异常硬化为特征的疾病。

2. The development of tympanosclerosis can be caused by chronic middle ear infections.
中耳慢性感染可导致中耳硬化症的发生。

3. The surgeon recommended a tympanoplasty procedure to treat the tympanosclerosis in her left ear.
外科医生建议进行鼓室成形术来治疗她左耳的中耳硬化症。