DICT.TW Dictionary Taiwan

 improver
 改進者;改進物;學徒,練習生

 Im·prov·er n. One who, or that which, improves.
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 improver
      n 1: someone devoted to the promotion of human welfare and to
           social reforms [syn: humanitarian, do-gooder]
      2: a component that is added to something to improve it; "the
         addition of a bathroom was a major improvement"; "the
         addition of cinammon improved the flavor" [syn: addition,
          add-on]