同根派生 cephalic vein相关词英汉例句But the cephalic veins are sometimes difficult to isolate.但部分患者分离头静脉存在困难。One of the best areas for the cannula is the cephalic vein in the shoulder area.肩部的头静脉是放置静脉导管最好的部位之一。cephalic vein更多例句