mis·sion·ary /ˈmɪʃəˌnɛri/
  傳教士,負有任務者,工作人員(a.)傳教的,負有使命的
  Mis·sion·ary n.; pl. Missionaries   One who is sent on a mission; especially, one sent to propagate religion.
  Missionary apostolic, a Roman Catholic missionary sent by commission from the pope.
  Mis·sion·a·ry, a. Of or pertaining to missions; as, a missionary meeting; a missionary fund.
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  missionary
       n 1: someone who attempts to convert others to a particular
            doctrine or program
       2: someone sent on a mission--especially a religious or
          charitable mission to a foreign country [syn: missioner]