teach·er /ˈtiʧɚ/
  教師,老師,導師
  Teach·er n.
  1. One who teaches or instructs; one whose business or occupation is to instruct others; an instructor; a tutor.
  2. One who instructs others in religion; a preacher; a minister of the gospel; sometimes, one who preaches without regular ordination.
     The teachers in all the churches assembled.   --Sir W. Raleigh.
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  teacher
       n 1: a person whose occupation is teaching [syn: instructor]
       2: a personified abstraction that teaches; "books were his
          teachers"; "experience is a demanding teacher"