amniotic sac是什么意思 amniotic sac怎么读
amniotic sac的英文翻译是什么意思，词典释义与在线翻译
Noun:- thin innermost membranous sac enclosing the developing embryo of higher vertebrates (reptiles, birds and mammals)
amniotic sac的用法和样例
- One outer membrane envelops both amniotic sacs.
两个羊膜囊由一个外膜层包裹。 - Amniocentesis is the removal of fluid from the amniotic sac.
羊膜穿刺术是从羊膜囊抽取羊水的技术。
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