harm·ful /ˈhɑrmfəl/
 (a.)有害的,傷害的


 Harm·ful a. Full of harm; injurious; hurtful; mischievous. “ Most harmful hazards.”
 --Harm*ful*ly, adv. -- Harm*ful*ness, n.

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 harmful
      adj 1: injurious to physical or mental health; "noxious chemical
             wastes"; "noxious ideas" [syn: noxious] [ant: innocuous]
      2: able or likely to do harm
      3: causing or capable of causing harm; "too much sun is harmful
         to the skin"; "harmful effects of smoking" [ant: harmless]
      4: constituting a disadvantage [syn: disadvantageous] [ant: advantageous]
      5: contrary to your interests or welfare; "adverse
         circumstances"; "made a place for themselves under the
         most untoward conditions" [syn: adverse, inauspicious,
          untoward]
      6: tending to cause great harm [syn: evil, injurious]