systemic veins

• 大静脉

systemic veins的用法和样例：

例句

1. Their predominant loci are the inferior vena cava and large veins of thighs.
   最好发的部位是下腔静脉与大腿的大静脉。
2. Pancreatic acini and pancreatic islets distribute around main veins, acinar cells being stained into navy blue are closely arranged.
   胰腺腺泡和胰岛分布于肝脏内大静脉周围，腺泡细胞染色深蓝色。