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 _    _    __   __    _  __     ___     _    _   
| || | ||  \ \\/ //  | |/ //   / _ \\  | \  / || 
| || | ||   \ ` //   | ' //   / //\ \\ |  \/  || 
| \\_/ ||    | ||    | . \\  |  ___  ||| .  . || 
 \____//     |_||    |_|\_\\ |_||  |_|||_|\/|_|| 
  `---`      `-`'    `-` --` `-`   `-` `-`  `-`

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發送短信 : Centralized control system in interdomain routing environments