... 哺乳动物 mammal 哺乳动物分类学 mammalian systematics 哺乳动物解剖学 mammalian anatomy ...
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传统的兽类分类学仅把哺乳动物毛皮特征作为参照，多以骨骼和牙齿作为分类依据，淡化了毛和毛被的分类鉴别作用。
Mostly bones and teeth used as a classification of traditional taxonomic zoology. Fur characteristics were counted as a reference, the characteristics of fur and hair were overlooked.
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