otic pit

例句：

1. 1. The doctor performed an operation to remove the otic pit.
   医生进行了一次手术，以去除耳道。
2. 2.He had a hearing problem that required an otic pit procedure.
   他有一个听力问题，需要通过耳道手术来解决。
3. 3. The patient's otic pit was enlarged due to chronic inflammation.
   患者的耳道因为慢性炎症而扩大。