n. [古生] 鸭嘴龙（一种长有鸭嘴的恐龙）
1.The fossil dinosaur eggs included 19 species assinged to 10 genera belonged 7 families. They are assosiated with Hadrosaurs, Tyrannosaurs, Sauropods, Charophytes, Sporopollen and trace fossils et al.
据初步统计，已有7科、10属、19种之多，且与霸王龙、鸭咀龙、蜥脚类及轮藻、孢粉、痕迹化石等共生。
2.The fossil dinosaur eggs included 19 species assinged to 10 genera belonged 7 families. They are assosiated with Hadrosaurs, Tyrannosaurs, Sauropods, Charophytes, Sporopollen and trace fossils et al.
据初步统计，已有7科、10属、19种之多，且与霸王龙、鸭咀龙、蜥脚类及轮藻、孢粉、痕迹化石等共生。
3.Much to their surprise, they found that only one group suffered from cancer-the hadrosaurs, or "duck-billed" dinosaurs. 29 benign tumors were found in the tail bones of 97 animals.
另科学家十分惊奇的是，仅有一组恐龙是癌症的受害者——它就是鸭嘴龙。研究人员在97个恐龙的尾骨里发现了29个良性肿瘤块。