發送短信 : Learning languages from positive data and negative counterexamples

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