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             ___      ______     ___     _____    
  ____      / _ \\   /_   _//   / _ \\  |  __ \\  
 |    \\   | / \ ||    | ||    / //\ \\ | |  \ || 
 | [] ||   | \_/ ||   _| ||   |  ___  ||| |__/ || 
 |  __//    \___//   /__//    |_||  |_|||_____//  
 |_|`-`     `---`    `--`     `-`   `-`  -----`   
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發送短信 : Mathematics and Technology