n.any of numerous large bipedal ornithischian dinosaurs having a horny duck-like bill and webbed feet; may have been partly aquatic
同义词：hadrosaurusduck-billed dinosaur
英汉双解大词典
hadrosaur/ˌhædrəˈsɔːrəs/(alsohadrosaurus)
1.
N（名词）
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)