amniotic membrane

• 羊膜

amniotic membrane的用法和样例：

例句

1. One outer membrane envelops both amniotic sacs.
   两个羊膜囊由一个外膜层包裹。
2. 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。