1·A chorionic villus is a minute vascular projection on the fetal chorion.
绒膜绒毛是胎儿绒毛膜上的一种微小的血管凸出物。
2·The highly vascular fetal membrane that consists of the fused chorion and allantois, found adjacent to the eggshell in reptiles and birds and constituting the placenta in most mammals.
由融合的绒毛膜和尿囊组成的富含血管的胎膜组织，存在于爬行类动物和鸟类的蛋壳附近，并且构成大多数哺乳动物的胎盘。
3·Chorion: the outer membrane enclosing the embryo in reptiles birds and mammals. in placental mammals it contributes to the development of the placenta.
绒毛膜：在爬行类动物，鸟类及哺乳类动物中包含胚胎的外膜，在有胎盘哺乳动物中与胎盘的发育有关。
4·Chorion: the outer membrane enclosing the embryo in reptiles birds and mammals. in placental mammals it contributes to the development of the placenta.
绒毛膜：在爬行类动物、鸟类及哺乳类动物中包含胚胎的外膜，在有胎盘哺乳动物中与胎盘的发育有关。
5·Resembling the chorion;
类似绒毛膜的；