left brachiocephalic vein

例句：

1. 1.The doctor removed the left brachiocephalic vein to relieve the patient's pain.
   医生移除了左头静脉以缓解病人的疼痛。
2. 2. During surgery, the surgeon carefully dissected the left brachiocephalic vein to avoid damaging the nerves.
   在手术过程中，外科医生小心翼翼地解剖左头静脉以避免损伤神经。
3. 3. The left brachiocephalic vein is a critical structure in the human body that plays a vital role in blood circulation.
   左头静脉是人体中一个重要的结构，它在血液循环中起着至关重要的作用。