發送短信 : Mobile application development for classroom event management

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