quarternary vein

例句：

1. 1. The doctor examined the patient's body and found a quarternary vein in his arm.
   医生检查了病人的手臂，发现他的手臂里有一根四分之一静脉。
2. 2. During surgery, the surgeon carefully dissected the tissue to locate the quarternary vein.
   在手术过程中，外科医生小心翼翼地解剖组织，以找到那根四分之一静脉。
3. 3. The quarternary vein is a rare anomaly that requires special attention during treatment.
   四分之一静脉是一种罕见的异常情况，治疗时需要特别注意。