noun🔗Share羊膜，包膜。 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. "医生解释说，羊膜就像一个充满液体的保护袋，在子宫里缓冲保护着宝宝。biologyanatomymedicineorganorganismChat with AIVocabulary GamePractice Reading
