primitive fish of the Mississippi valley having a long paddle-shaped snout
small densely furred aquatic monotreme of Australia and Tasmania having a broad bill and tail and webbed feet; only species in the family Ornithorhynchidae
Adjective:
having a beak resembling that of a duck;
"a duck-billed dinosaur"
例句
用作名词 (n.)
New evidence, however, challenges that theory.The duckbill platypus, it turns out, gets about eight hours of REM shuteye a day. 新证据向上述观点提出挑战，它推翻了鸭嘴兽一天睡眠八小时的理论。
美
['dʌkˌbɪl]
