embryonic membrane

英 [ˌembriˈɒnɪk ˈmembreɪn]

美 [ˌembriˈɑːnɪk ˈmembreɪn]

胚膜；胎膜

英英释义

noun

• the inner membrane of embryos in higher vertebrates (especially when covering the head at birth)
  Synonym:caulveil

双语例句