發送短信 : The Effect of the Change of Schemas on Recall

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