deep iliac circumflex vein

例句：

1. 1.The deep veins in the leg are responsible for carrying blood away from the heart.
   腿部的深静脉负责将血液从心脏输送出去。
2. 2.During surgery, the surgeon must be careful not to damage the deep veins.
   在手术过程中，外科医生必须小心不要损伤深静脉。
3. 3. Deep vein thrombosis is a condition where a blood clot forms in one of these veins.
   深静脉血栓是一种情况，其中一条静脉中形成了血块。