同根派生 英汉例句vena labialis superior 上唇静脉vena labialis communis 唇总静脉vena labialis inferior 下唇静脉Duplication of IVC (inferior vena cava) is rare. 摘要下腔静脉复制之发生是罕见的。In group A,two vena comitans were anastomosed. 测量三组兔胫后血管外径。