名詞 dinosaur:

1. any of numerous extinct terrestrial reptiles of the Mesozoic era

1. The natural history museum have a special exhibition of dinosaur.
   自然歷史博物館專門搞了一次恐龍展覽。
2. No one have come up with a convincing explanation of why dinosaur die out.
   尚未有人能對恐龍的滅絕作出一個令人信服的解釋。
3. We reconstructed what the dinosaur looked like from a few of its bones.
   我們根據(jù)恐龍的一些骨頭重組恐龍的原貌。
4. His movie of the extinction of dinosaurs was a great success.
   他的關(guān)于恐龍滅絕的電影取得了巨大的成功。

di.no.saur

n.（名詞）
Any of various extinct, often gigantic, carnivorous or herbivorous reptiles of the orders Saurischia and Ornithischia that were chiefly terrestrial and existed during the Mesozoic era.
恐龍：一種主要生活在中生代時期的陸棲動物，是龐大的食肉或食草爬行類動物，屬龍盤目與鳥盤目，已絕種
A relic of the past:
恐龍遺?。?/br>例句：
.living dinosaurs of the world of vegetation.(John Olmsted)
.植物界現(xiàn)存的恐龍.(約翰·奧姆斯特德)

One that is hopelessly outmoded or unwieldy:
類恐龍物：滅絕或龐大的動物：
例句：
.The old, big-city teaching hospital is a dinosaur.(Peggy Breault)
.古老的大城市教學(xué)醫(yī)院象是一個恐龍.(佩吉·布勞爾特)

來源：
Greek deinos [monstrous]
希臘語 deinos [龐大的]
Greek sauros [lizard]
希臘語 sauros [類似于蜥蜴的爬行動物]

【引伸】
di.nosau.ric