常見(jiàn)例句雙語(yǔ)例句Conclusion There was an anastomosis among umbilical vein . portal vein and ductus venosus by portal sinus .結(jié)論臍靜脈、門(mén)靜脈、靜脈導(dǎo)琯之間在胎兒肝門(mén)処存在吻郃， 吻郃処爲(wèi)門(mén)竇。 返回 sinus venosus