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  / ___//   / _ \\    / ___//  |  ___|| | \  / || 
  \___ \\  / //\ \\   \___ \\  | ||__   |  \/  || 
  /    // |  ___  ||  /    //  | ||__   | .  . || 
 /____//  |_||  |_|| /____//   |_____|| |_|\/|_|| 
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發送短信 : Card-Collection Mechanics in Educational Location-Based AR Games: Transforming Learning Goals to Virtual Rewards