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  ____       ___     _    _     ______    _____   
 |  _ \\    / _ \\  | || | ||  /_   _//  / ____|| 
 | |_| ||  | / \ || | || | ||   -| ||-  / //---`' 
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 |_|\_\\    \___//   \____//   /_____//  \_____|| 
 `-` --`    `---`     `---`    `-----`    `----`

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發送短信 : The Use and Influence of Technology in Mathematics Education