arch of aorta

例句：

1. 1. The arch of the aorta is visible through the chest wall.
   通过胸壁可以看到主动脉弓。
2. 2. The arch of the aorta is responsible for carrying blood away from the heart.
   主动脉弓负责将血液从心脏输送出去。
3. 3. The arch of the aorta is an important structure in the cardiovascular system.
   主动脉弓是心血管系统中的一个重要结构。