pro·fes·sion·al·ism /-ˈfɛʃnəˌlɪzəm, ˈfɛʃənḷˌɪ-/
  職業特性,職業化
  Pro·fes·sion·al·ism n. The following of a profession, sport, etc., as an occupation; -- opposed to amateurism.
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  professionalism
       n : the expertness characteristic of a professional person