發送短信 : Educational unmanned surface robot

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