middle hepatic veins

例句：

1. 1. The surgeon carefullydissected the middle hepatic veins to remove thetumor.
   外科医生小心地解剖了中间肝静脉以切除肿瘤。
2. 2. Duringsurgery, the surgeon hadto identify and ligate themiddle hepatic veins toprevent bleeding.
   在手术过程中，外科医生必须识别并结扎中间肝静脉以防止出血。
3. 3. The patient's condition worsened after the middle hepatic veins were damaged during the operation.
   患者在手术过程中损伤了中间肝静脉后病情恶化。