tegosaurus.
釋義：n.劍龍
例句：Scientists do not know what the bony plates on the back of the Stegosaurus were for.
科學(xué)家們不知道劍龍背上的這些板狀的骨頭有什么用。
triceratops.
釋義：n.三角恐龍
例句：A triceratops was about as tall as a school bus.
一只三角恐龍大約和公共汽車一樣高
diplodocus.
釋義：n. 梁龍(古生物恐龍的一種)
例句：Diplodocus had a very small brain and was not smart.
梁龍的.腦袋非常小,所以它不聰明。
ichthyosaurus.
釋義：n. 魚龍
例句：A ferocious predator, the Ichthyosaur can ravage even the most hardy prey in seconds.
作為一種兇殘的食肉動物，魚龍可以在幾秒內(nèi)蹂躪最強悍的獵物。