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An inside look at how Sweden is building the world’s second-longest tunnel

Posted Mar 11, 2018 2018-03-11T00:00:00+08:00 by PipisCrew

https://arstechnica.com/cars/2018/03/can-you-build-an-environmentally-friendly-megatunnel-sweden-thinks-so/

origin - http://www.pipiscrew.com/?p=13071 an-inside-look-at-how-sweden-is-building-the-worlds-second-longest-tunnel

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