monotreme

英 [ˈmɒnətriːm]

美 [ˈmɑːnətriːm]

n.  单孔目动物(卵生哺乳动物)

复数：monotremes　

医学

牛津词典

noun

• 单孔目动物（卵生哺乳动物）
  a class of animal including the echidna and the platypus , which lays eggs, but also gives milk to its babies

英英释义

noun

• the most primitive mammals comprising the only extant members of the subclass Prototheria
  Synonym:egg-laying mammal

双语例句

• Small densely furred aquatic monotreme of Australia and Tasmania having a broad bill and tail and webbed feet; only species in the family ornithorhynchidae.
  澳大利亚和塔斯马尼亚的体毛浓密、水生小哺乳动物，嘴和尾宽阔，脚有蹼；鸭嘴兽科的唯一种类。
• Burrowing spine-covered monotreme of Australia having a long snout and claws for hunting ants and termites.
  澳大利亚体表有刺的穴居单孔目动物，有长长的口鼻以及用于捕食蚂蚁和白蚁的爪。