Monotremes

常见例句

Having no placenta, as marsupials and monotremes.
无胎盘的无胎盘的，如有袋目哺乳动物和单孔目动物
Having no placenta,as marsupials and monotremes.
无胎盘的无胎盘的，如有袋目哺乳动物和单孔目动物
All mammals except monotremes and marsupials are placental mammals.
除了单孔类动物和有袋动物之外所有的哺乳动物都是有胎盘的哺乳动物。
The world's only monotremes are the platypus and the echidna.
鸭嘴兽和针鼹鼠是世界上唯一的单孔类动物。
Any warm-blooded vertebrate having the skin more or less covered with hair,young are born alive except for the small subclass of monotremes and nourished with milk.
温血脊椎动物，皮肤表层有或多或少的毛发，除单孔目动物之外其新生幼体都是活的并靠乳汁滋养。
Animals that hibernate include bats, ground squirrels and other rodents, mouse lemurs, the European Hedgehog and other insectivores, monotremes, and marsupials.
冬眠动物包括蝙蝠、地面松鼠和其它啮齿类动物、鼠狐猴、欧洲刺猬和其它食虫动物、单孔类动物和有袋动物。