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

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發送短信 : Real-time navigation in 3D environments based on 2D sensor