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數學51年教學經驗吳sir 1)可到訪替現職數學老師改良教學方法 $1,500/小時 2)可到訪替中學學生數學補習 $1,000/小時（學生最初半小時免費作前景評估） 3)可到訪替中學學生補習英文$1,000/小時（學生最初半小時免費作前景評估）
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