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

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發送短信 : Framework for design of effective online learning communities