Bison: America's New National Mammal?
日期:2016-04-30
Words in This Story
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mammal - n. a type of animal that feeds milk to its young and that usually has hair or fur covering most of its skin
species - n. a group of animals that are similar and can produce young animals
extinct - adj. no longer existing
seal - n. an official mark that is stamped on paper or on a small piece of wax to show that something (such as a document) is genuine and has been officially approved
role - n. the part that someone or something has in a family, society, or other group
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