常见例句用作名词 (n.)The inferior vena cava duplication is a rare congenital anomaly.下腔静脉重复畸形是一种罕见的先天性血管发育变异。The posterior borders of the left ventricle and inferior vena cava are well seen.左心室和下腔静脉的后界看得很清楚。 返回 vena