發送短信

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CAPTCHA:

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\ \\ / // | || | || | || | ||  /_   _// \ \\ / // 
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   \//     \____//   \____//   /_____//    \//    
    `       `---`     `---`    `-----`      `

Please enter what you see:

發送短信 : Interactivity in online chat : conversational contingency and response latency in computer-mediated communication