principal artery of thumb

例句：

1. 1. The main artery of theheart is responsible for delivering oxygenated bloodto the rest of the body.
   心脏的主要动脉负责将氧气丰富的血液输送到身体其他部位。
2. 2. During surgery, the surgeonmust locate and ligate the main artery to prevent excessive bleeding.
   在手术过程中，外科医生必须找到并结扎主要动脉以防止过度出血。
3. 3. Thediscovery of this new drughas revolutionized the treatment ofcancer, as it targets the mainartery that feeds tumors withnutrients.
   这种新药的发现已经彻底改变了癌症治疗的方式，因为它针对的是供给肿瘤养分的主要动脉。