發送短信 : The evaluation of time-dependent attributes

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