柯林斯詞典portal vein 1. N any vein connecting two capillary networks, esp in the liver (hepatic portal vein) 門靜脈; 尤指肝 返回 portal vein劍橋詞典the vein that carries blood , containing substances obtained from food , from the intestines to the liver 門靜脈（這種靜脈將血液從小腸運(yùn)輸?shù)礁闻K，血液中含有從食物所吸收的物質(zhì)） 返回 portal vein