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 |  _ \\  | || | ||  /_   _// | || | ||   ____    
 | |_| || | || | ||    | ||   | || | ||  |    \\  
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 |_|\_\\   \____//   /__//     \____//   |  __//  
 `-` --`    `---`    `--`       `---`    |_|`-`   
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發送短信 : Learning visual representations without human supervision