noun🔗Share羊膜The innermost membrane of the fetal membranes of reptiles, birds, and mammals; the sac in which the embryo is suspended."The doctor explained that the amnion, a protective sac filled with fluid, cushions the baby inside the womb. "医師は、羊膜、つまり液体で満たされた保護膜が子宮内の赤ちゃんを保護すると説明しました。biologyanatomymedicineorganorganismChat with AIVocabulary GamePractice Reading