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 _    _    __   __    ______   __   __   _    _   
| || | ||  \ \\/ //  /_   _//  \ \\/ // | |  | || 
| || | ||   \ ` //   `-| |,-    \ ` //  | |/\| || 
| \\_/ ||    | ||      | ||      | ||   |  /\  || 
 \____//     |_||      |_||      |_||   |_// \_|| 
  `---`      `-`'      `-`'      `-`'   `-`   `-`

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發送短信 : Why do the poor pay more? Exploring the poverty penalty concept