發送短信 : Remotely controlled crawler for underwater inspection

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