pro·fes·sion·al /prəˈfɛʃnəl, ˈfɛʃənḷ/
  (a.)職業的,專業的自由職業者,專門人員
  pro·fes·sion·al /prəˈfɛʃnəl, ənḷ/ 形容詞
  職業的,專業的
  professional
  專業
  Pro·fes·sion·al a.
  1. Of or pertaining to a profession, or calling; conforming to the rules or standards of a profession; following a profession; as, professional knowledge; professional conduct.  “Pride, not personal, but professional.”  --Macaulay. “A professional sneerer.” --De Quincey.
  2. Engaged in by professionals; as, a professional race; -- opposed to amateur.
  Pro·fes·sion·al, n. A person who prosecutes anything professionally, or for a livelihood, and not in the character of an amateur; a professional worker.
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  professional
       adj 1: engaged in a profession or engaging in as a profession or
              means of livelihood; "the professional man or woman
              possesses distinctive qualifications"; "began her
              professional career after the Olympics"; "professional
              theater"; "professional football"; "a professional
              cook"; "professional actors and athletes" [ant: nonprofessional]
       2: of or relating to or suitable as a profession; "professional
          organizations"; "a professional field such as law"
       3: characteristic of or befitting a profession or one engaged
          in a profession; "professional conduct"; "professional
          ethics"; "a thoroughly professional performance" [ant: unprofessional]
       4: of or relating to a profession; "we need professional
          advice"; "professional training"; "professional equipment
          for his new office"
       5: engaged in by members of a profession; "professional
          occupations include medicine and the law and teaching"
       n 1: a person engaged in one of the learned professions [syn: professional
            person]
       2: an athlete who plays for pay [syn: pro] [ant: amateur]
       3: an authority qualified to teach apprentices [syn: master]