external jugular vein

例句：

1. 1. The doctor performed an emergency surgery on the patient's external jugular vein to save his life.
   医生对病人的外部颈静脉进行了紧急手术，以挽救他的生命。
2. 2.During the operation, the surgeon had to cut through the external jugular vein to reach the heart.
   在手术过程中，外科医生必须切断外部颈静脉才能到达心脏。
3. 3. The patient was given a blood transfusion after the operation, which involved the external jugular vein.
   手术完成后，患者接受了一次输血，这次输血涉及到了外部颈静脉。