triangular pelvis

例句：

1. 1.The patient had a triangular pelvis, which made it difficult for her to walk.
   这位病人有一个三叶形的骨盆，这使得她走路很困难。
2. 2.The doctor diagnosed the patient with a triangular pelvis and recommended surgery.
   医生诊断出患者患有三叶形骨盆，并建议进行手术。
3. 3. The patient's triangular pelvis was causing her discomfort during pregnancy.
   患者的三叶形骨盆在怀孕期间引起了她的不适。