genealogical

1.genealogical research.

家谱研究。

2.a ramified genealogical network.

支系蔓生宗谱网络。

3.Historical linguists have to identify and classify families of related languages in a genealogical family tree, and to reconstruct the protolanguage.

历史语言学家们通过对各语系中相关语言进行甄别，勾画出家族谱系图，从而重新构建语系原始语。