Vena intercostalis superior sinistra

例句：

1. 1. The superior vena cava is a vein that carries blood from the upper body to the heart.
   上腔静脉是一条将血液从上体输送到心脏的静脉。
2. 2. During surgery, the surgeon must avoid damaging the superior vena cava to prevent complications.
   在手术中，外科医生必须避免损伤上腔静脉以防止并发症。
3. 3. The patient's condition worsened after the surgery, and the doctor had to reroute the superior vena cava to bypass the blockage.
   手术后，患者的病情恶化了，医生不得不重新规划上腔静脉路线以绕过阻塞。