circulus arteriosus major

例句：

1. 1.The baby's heart was operating on the circulus arteriosus major.
   婴儿的心脏在通过动脉导管工作。
2. 2.The surgery involved removing the circulus arteriosus major to repair the damaged area.
   手术需要移除动脉导管以修复受损区域。
3. 3. The doctor explained that the circulus arteriosus major is responsible for delivering blood from the heart to the lungs.
   医生解释说，动脉导管负责将血液从心脏输送到肺部。