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  _____     ______    ______    _____     _  __  
 /  ___||  /_   _//  /_____//  |  ___||  | |/ // 
| // __     -| ||-   `____ `   | ||__    | ' //  
| \\_\ ||   _| ||_   /___//    | ||__    | . \\  
 \____//   /_____//  `__ `     |_____||  |_|\_\\ 
  `---`    `-----`   /_//      `-----`   `-` --` 
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發送短信 : Opinion formation in growing social systems