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

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發送短信 : Transitions of Affective States in an Intelligent Tutoring System