noun 下载 🔗分享 囊胚 An early form in the development of an embryo, consisting of a spherical layer of cells filled with fluid; a blastosphere. Examples : "The biology textbook showed pictures of fertilized eggs developing, and one image displayed clusters of cells called blastulae, which looked like tiny, fluid-filled balls. " 这本生物学课本展示了受精卵发育的图片,其中一张图片显示了被称为囊胚的细胞团,它们看起来像微小的、充满液体的球体。 biology organism anatomy 与AI对话词汇游戏阅读练习