di·e·tet·ic /ˌdaɪəˈtɛtɪk/
  (a.)飲食的,食物療法的
  Di·e·tet·ic Di·e·tet·ic·al a.  Of or performance to diet, or to the rules for regulating the kind and quantity of food to be eaten.
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  dietetic
       adj : of or relating to the diet; "dietary restrictions" [syn: dietary,
              dietetical]