常見例句雙語例句Chorion: the outer membrane enclosing the embryo in reptiles birds and mammals. in placental mammals it contributes to the development of the placenta.羢毛膜：在爬行類動物，鳥類及哺乳類動物中包含胚胎的外膜，在有胎磐哺乳動物中與胎磐的發(fā)育有關。 返回 placental membrane