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