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  ______   __   __    ______     ___      _  __  
 /_____//  \ \\/ //  /_   _//   / _ \\   | |/ // 
 `____ `    \ ` //     | ||    / //\ \\  | ' //  
 /___//      | ||     _| ||   |  ___  || | . \\  
 `__ `       |_||    /__//    |_||  |_|| |_|\_\\ 
 /_//        `-`'    `--`     `-`   `-`  `-` --` 
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發送短信 : A p-center grid-positioning aggregation procedure