small densely furred aquatic monotreme of Australia and Tasmania having a broad bill and tail and webbed feet; only species in the family Ornithorhynchidae
例句
用作名词(n.)
I saw a platypus and a kangaroo.我看到了鸭嘴兽和袋鼠。
One of the mascots was the platypus.吉祥物一是鸭嘴兽。
The platypus spends a great deal of its time looking for food.鸭嘴兽要用大量的时间去觅食。
