... kangaroo袋鼠 4 bandicoot袋狸 5 罾 koala考拉 monotremes单孔目动物 platypus鸭嘴兽 8 罾 echidna针鼹 ...
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同义词： egg-laying mammal
以上来源于: WordNet
N any mammal of the primitive order Monotremata, of Australia and New Guinea: egg-laying toothless animals with a single opening (cloaca) for the passage of eggs or sperm, faeces, and urine. The group contains only the echidnas and the platypus (澳大利亚和新几内亚)单孔目哺乳动物
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。
Today, this bizarre but fascinating creature is known as the platypus, one of only five extant monotremes (egg-laying mammals).
如今，这种怪诞但迷人的生物被命名为鸭嘴兽，现存的五种卵生哺乳动物之一。
The echidna is such a unique animal that it is classified in a special class of mammals known as monotremes, which it shares only with the platypus.
因针鼹鼠之独特，被定类为特殊的哺乳动物，属单孔类动物。单孔类动物只有针鼹鼠和鸭嘴兽。
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