發送短信

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

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發送短信 : Simulation study of frequency estimators