health·ful /ˈhɛlθfəl ||ˈhɛltθ-/
  (a.)有益健康的,使人健康的,衛生的
  health·ful /ˈhɛlθfəl/ 形容詞
  有益于健康的,符合衛生的
  Health·ful a.
  1. Full of health; free from illness or disease; well; whole; sound; healthy; as, a healthful body or mind; a healthful plant.
  2. Serving to promote health of body or mind; wholesome; salubrious; salutary; as, a healthful air, diet.
     The healthful Spirit of thy grace.   --Book of Common Prayer.
  3. Indicating, characterized by, or resulting from, health or soundness; as, a healthful condition.
     A mind . . . healthful and so well-proportioned.   --Macaulay.
  4. Well-disposed; favorable. [R.]
     Gave healthful welcome to their shipwrecked guests.   --Shak.
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  healthful
       adj 1: conducive to good health of body or mind; "a healthful
              climate"; "a healthful environment"; "healthful
              nutrition"; "healthful sleep"; "Dickens's relatively
              healthful exuberance" [ant: unhealthful]
       2: free from filth and pathogens; "sanitary conditions for
          preparing food"; "a sanitary washroom" [syn: sanitary]
          [ant: unsanitary]