| 单词 | 白垩纪 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔Cretaceous〕Cretaceous rocks 白垩纪时期的岩石剑桥高阶〔Cretaceous〕The Cretaceous Period.白垩纪美国传统〔allosaur〕Any of various carnivorous dinosaurs of the late Jurassic and early Cretaceous Periods, similar to but smaller than the tyrannosaur.跃龙，异龙：侏罗纪晚期和白垩纪早期任一种食肉恐龙，形似霸王龙但体型较小美国传统〔ankylosaur〕A large herbivorous dinosaur of the Cretaceous Period, having a squat, heavily armored body and a clubbed tail.甲龙：白垩纪时期的大型食草恐龙，具有蹲坐的笨重披甲身体和棒状的尾巴美国传统〔pterodactyl〕Any of various small, mostly tailless, extinct flying reptiles of the order Pterosauria that existed during the Jurassic and Cretaceous periods.翼手龙：任一种小型已灭绝的翼龙目的飞行爬行动物，它们绝大多数都没有尾巴，生活在侏罗纪和白垩纪之间的那段时期美国传统〔sauropod〕Any of various large semiaquatic dinosaurs of the suborder Sauropoda, of the Jurassic and Cretaceous periods.蜥脚类动物：侏罗纪和白垩纪的蜥脚亚目大型半水生恐龙美国传统〔theropod〕Any of various carnivorous dinosaurs of the suborder Theropoda, of the Jurassic and Cretaceous periods, characterized by short forelimbs.兽角类：生活于侏罗纪和白垩纪且以其短的前肢为特征的兽角亚目食肉性恐龙美国传统〔tyrannosaur〕A large carnivorous dinosaur of the Upper Cretaceous Period of North America, characterized by small forelimbs and a large head.霸王龙：上白垩纪北美洲的一种大型食肉恐龙，前肢小且头大美国传统 |
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