ra·cial /ˈreʃəl/ 形容詞
  種族,人種的
  Ra·cial a. Of or pertaining to a race or family of men; as, the racial complexion.
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  racial
       adj 1: of or related to genetically distinguished groups of people;
              "racial groups"
       2: of or characteristic of race or races or arising from
          differences among groups; "racial differences"; "racial
          discrimination" [ant: nonracial]