spheric annulus

例句：

1. 1.The spheric annulus is a crucial structure in the human body.
   球面囊管是人体中一个至关重要的结构。
2. 2.The doctor performed a surgery to repair the spheric annulus.
   医生进行了一次手术来修复球面囊管。
3. 3. The patient was diagnosed with a condition that requires the removal of the spheric annulus.
   患者被诊断出患有一种需要移除球面囊管的状况。