单词	non-avian dinosaur
释义	non-avian dinosaur noun variants or nonavian dinosaur plural non-avian dinosaurs or nonavian dinosaurs : any dinosaur that is not a bird These new data show that certain non-avian dinosaurs and early birds shed their skin in ways very similar to that of modern birds and mammals. Hanneke Meijer Following a mass extinction at the end of the Cretaceous period some 65 million years ago, an event that drove non-avian dinosaurs extinct, the size and diversity of mammals exploded over a 15-million-year period, researchers say. Pete Spotts Whereas the last of the nonavian dinosaurs certainly perished 64.5 million years ago, many other animals survived … James Gurney compare avian dinosaur Word History First Known Use 1988, in the meaning defined above
随便看	ungraded ungraded school ungraduated ungrafted ungrammatical ungrammaticalities ungrammaticality ungrammatically ungranted ungranted land ungraspable ungrasped ungrateful ungratefully ungratefulness ungratefulnesses ungratified ungrave ungraven ungreased ungreeted ungregarious ungroomed unground ungrounded

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