chorion

常见例句

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。
dict.cn
It also, when possible, noted whether fetuses were surrounded by their own chorionic membrane, or whether that chorion was shared.
这个资料也可能记载了胎儿是否自己单独拥有一个绒毛膜，还是与孪生同胞共享。
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。