iliopectineal arch

例句：

1. 1. The iliopectineal arch is a crucial structure in the development of the human fetus.
   脐动脉弓是胎儿发育过程中至关重要的结构。
2. 2.During labor, the iliopectineal arch plays a vital role in delivering the baby.
   在分娩过程中，脐动脉弓起着至关重要的作用，负责将婴儿推出。
3. 3.A study found that the iliopectineal arch was associated with an increased risk of preterm birth.
   研究发现，脐动脉弓与早产的风险增加有关。