duckbill

• 指一种产于密西西比河流域的原始鱼类，有长桨状吻部；也指一种产于澳大利亚和塔斯马尼亚的小型、密毛水生单孔目动物，有宽扁的喙、尾巴和蹼足。

A noun referring to either a primitive fish of the Mississippi valley with a long paddle-shaped snout, or a small, densely furred aquatic monotreme of Australia and Tasmania with a broad bill and tail and webbed feet.

1. C1formalamerican

   A primitive fish from the Mississippi valley, characterized by a long, paddle-shaped snout.

   匙吻鲟

   • The duckbill is a rare species found in the Mississippi valley.
   • Scientists studied the duckbill's unique paddle-shaped snout.
   • The duckbill's habitat is threatened by pollution.

   同义词paddlefishspoonbill

2. PlatypusB2formal

   A small, densely furred aquatic monotreme native to Australia and Tasmania, with a broad bill and tail and webbed feet. It is the only species in the family Ornithorhynchidae.

   鸭嘴兽

   • The duckbill, or platypus, is one of the few egg-laying mammals.
   • Duckbills are known for their unique appearance and venomous spurs.
   • The duckbill's webbed feet make it an excellent swimmer.

   同义词duck-billed platypusplatypus