They also have their unique research value to language history, genealogical classification, ethnic history and culture.
中国的濒危语言对语言史、语言谱系分类以及民族历史文化都有其独特的研究价值。
They also have their unique research value to language history, genealogical classification, ethnic history and culture.
中国的濒危语言对语言史、语言谱系分类以及民族历史文化都有其独特的研究价值。
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