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  _____      ___     _    _    _    _     _  __  
 / ____||   / _ \\  | \  / || | || | ||  | |/ // 
/ //---`'  | / \ || |  \/  || | || | ||  | ' //  
\ \\___    | \_/ || | .  . || | \\_/ ||  | . \\  
 \_____||   \___//  |_|\/|_||  \____//   |_|\_\\ 
  `----`    `---`   `-`  `-`    `---`    `-` --`

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發送短信 : Ethnomathematics for capacity building in mathematics education