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

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發送短信 : Causal order in parallel and distributed simulation systems