發送短信 : On the role of update constraints and text-types in iterative learning

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