sinus urogenitalis

例句：

1. 1. The doctor performed a surgery to repair the damaged sinus urogenitalis.
   医生进行了手术来修复受损的子宫下段。
2. 2.During childbirth, the sinus urogenitalis is the area where the cervix meets the vagina.
   分娩期间，子宫下段是宫颈与阴道交界处的区域。
3. 3. The patient's condition was complicated by a severe infection in the sinus urogenitalis.
   患者的病情因严重的感染而复杂化。