劍橋詞典a large Australian bird with a long neck and grey or brown feathers . Emus cannot fly but have long legs and can run quickly . （産於澳大利亞的）鴯鶓 Emus grow to almost two metres and can run at nearly 50 kph . 鴯鶓可以長(zhǎng)到差不多兩米高，奔跑時(shí)速幾乎可達(dá)50公裡。 返回 emu