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

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發送短信 : Stabilization, Safety, and Security of Distributed Systems