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結果 : in which country is the longest underwater rail tunnel
5:38

How the world's longest underwater tunnel was built - Alex Gendler

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0:07

World's longest underwater rail and road

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3:40

How the world’s largest underwater tunnel is being built | BBC News

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4:12

Unbelievable! The sea is full of water, how is the undersea tunnel built?

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0:56

The Channel Tunnel: The World's Longest Underwater Tunnel

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17:03

How Europe's Building the World's Longest Underwater Tunnel!

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0:32

World's Longest Underwater Tunnel Costs $7 BILLION!

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0:43

Channel Tunnel | Paris to london | UK | France | Railway tunnel | viral | gk | UPSC | facts #shorts

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Inside Norway's $47 Billion Floating Highway

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How Underwater Tunnels Are Built?

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12 World's Most Incredible Undersea Tunnels

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0:59

How Germany and Denmark Are Building the World’s Longest Immersed Tunnel

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0:16

Who designed this underwater road? That's so talented!#viralshort #subscribe

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0:14

Boarding The Eurotunnel - France to UK Car Train #travel

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8:15

China Leaves American President Shocked, Builds The Longest Undersea Tunnel In The World

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How do they build tunnels underwater | Chunnel Bridge #secrettunnel #passageways #meande #weir

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Riding the Japan's Underwater Bullet Train from Hokkaido to Morioka

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I took an Underwater Train From Paris to London 🇬🇧

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14:32

America Is Shocked! China's Insane Construction Tech Creates the World's Longest Underwater Tunnel!

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