noun ダウンロード 🔗共有 胞胚 An early form in the development of an embryo, consisting of a spherical layer of cells filled with fluid; a blastosphere. Examples : "After fertilization, the egg divides repeatedly, forming a blastula, a hollow ball of cells that's an early stage in embryo development. " 受精後、卵は繰り返し分裂し、胚発生の初期段階である細胞の中空の球体である胞胚を形成します。 biology anatomy organism animal AIとチャット語彙ゲーム読解練習