Historical linguists have to identify and classify families of related languages in a genealogical family tree, and to reconstruct the protolanguage.
历史语言学
过对各语系中相关语言进行甄别，勾画出族谱系图，从而重
构建语系的原始语。
Historical linguists have to identify and classify families of related languages in a genealogical family tree, and to reconstruct the protolanguage.
历史语言学过对各语系中相关语言进行甄别，勾画出族谱系图，从而重构建语系的原始语。
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成，部分未经过人工审核，其表达内容亦不代表本软件的观点；若发现问题，欢迎向我
指正。
