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  ______   _    _   __    __    ______    _  _   
 /_____// | || | || \ \\ / //  /_   _//  | \| || 
 `____ `  | || | ||  \ \/ //    -| ||-   |  ' || 
 /___//   | \\_/ ||   \  //     _| ||_   | .  || 
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發送短信 : Game system for learning using Unity2D