资料来源 : pyDict

供拳击用的沙袋

资料来源 : WordNet®

punching bag
     n 1: a person on whom another person vents their anger; "he
          resigned because his boss used him as a punching bag"
     2: an inflated ball or bag that is suspended and punched for
        training in boxing [syn: {punch bag}, {punching ball}, {punchball}]