N any one of a large group of bipedal Upper Cretaceous dinosaurs of the genus Anatosaurus, Maiasaura, Edmontosaurus, and related genera: partly aquatic, with a duck-billed skull and webbed feet 鸭嘴龙 (Also called duck-billed dinosaur)
Nicknamed Dakota, the hadrosaur is one of only five naturally preserved dinosaur mummies ever discovered.
绰号达科他的恐龙是一个只有5个自然保护恐龙化石(的群落)发现。
While the scratches told the scientists how the animal may have chewed, the lack of pit marks on the teeth suggested what the hadrosaur was eating.
这些纹路能告诉科学家们这些动物可能是怎样咀嚼食物的，而牙齿上并没有坑坑洼洼的小坑，这个迹象告诉我们鸭嘴龙吃什么。
The cause of hadrosaur cancer remains a mystery today, but dinosaur fossils are helping unlock secrets of diseases millions of years old. Who knows what else they'll reveal.
鸭嘴龙的癌症病因至今还是个谜，但恐龙化石帮助我们揭开了隐藏了百万年之久的秘密。谁知道它们还会揭示什么呢。
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