Figure 18. Case 13. Upper transverse thoracic view showing a thin pulmonary artery arising from the aorta, the hallmark of a truncus arteriosus.是什么意思_Figure 18. Case 13. Upper transverse thoracic view showing a thin pulmonary artery arising from the aorta, the hallmark of a truncus arteriosus.在线翻译_英语_读音_用法_例句