鸸鹋是一种大型的澳大利亚不会飞的鸟，类似于鸵鸟，但是有三趾的脚和灰色或棕色的羽毛。
Emu is a large Australian flightless bird, similar to the ostrich but with three-toed feet and grey or brown plumage.
这只鸟的学名是非洲鸵鸟双峰。
Ostrich(鸵鸟)是一种鸟(显然是)，并从Bird类继承。
Ostrich is a Bird (definitely it is!) and hence it inherits the Bird class.
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