noun 下载 🔗分享 胎盘形成,胎盘着生。 The local fusion of the embryonic stage of an animal to its parent for physiological exchange to promote the growth and development of the young; involves a placenta in non-egglaying mammals. Examples : "Simple Sentence: The type of placentation in humans ensures the baby receives nutrients from the mother during pregnancy. " 人类的胎盘形成方式确保了婴儿在怀孕期间能够从母亲那里获得营养。 physiology biology anatomy medicine animal organism function 与AI对话词汇游戏阅读练习