英语词汇“amniotic sac”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	amniotic sac
释义	amniotic sac noun The fluid-filled sac that contains and protects a fetus in the womb.The amniotic sac that contains your baby begins to form about 12 days after conception.... The outer cells will go on to form the placenta and amniotic sac that the baby will grow in. Before a baby is born, it is surrounded by water in the amniotic sac.
随便看	paraphrasist paraphrast paraphrastic paraphrastical paraphrastically paraphrenia paraphrenic paraphyletic paraphyllium paraphyly paraphysate paraphysical paraphysis Para piassava ParaPlane paraplasm Paraplast paraplegia paraplegic paraplegic games Paraplegic Olympics parapluie parapod parapodial parapodium

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