iliac vein

例句：

1. 1. The iliac vein is responsible for carrying blood from the lower body to the heart.
   髂静脉负责将血液从下肢输送到心脏。
2. 2.During surgery, the iliac veins need to be ligated to prevent bleeding.
   在手术期间，需要结扎髂静脉以防止出血。
3. 3.The iliac vein is a common site for the development of varicose veins in the legs.
   髂静脉是腿部静脉曲张的常见部位。