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

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發送短信 : Roles in ORM: A suggested semantics