發送短信 : Progressive sketching with instant previewing

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