a line of descent traced continuously from an ancestor
系谱;家谱;宗谱
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the genealogies of the kings of Mercia .麦西亚国王的系谱。
[mass noun]the study and tracing of lines of descent
系谱学;家谱学;宗谱学。
a plant's or animal's line of evolutionary development from earlier forms
(动植物的)系,系统。
"Middle English: via Old French and late Latin from Greek