blood·line /-ˌlaɪn/
  血統,血族
  bloodline
       n 1: the descendants of one individual; "his entire lineage has
            been warriors" [syn: lineage, line, line of descent,
             descent, blood line, blood, pedigree, ancestry,
             origin, parentage, stemma, stock]
       2: ancestry of a purebred animal [syn: pedigree]