lineage/ˈlɪnɪɪdʒ; `lɪnɪɪdʒ/ n[U](fml 文) line of descent from an ancestor; ancestry 宗系; 世系; 血统 trace one's lineage back many centuries 回溯许多世纪以探求自己的宗谱 be of humble lineage 出身寒微.
牛津英汉双解词典