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Seikan Tunnel Line breaks: Sei¦kan Tun¦nel
Pronunciation: /ˈseɪkən/

Definition of Seikan Tunnel in English:

The world’s longest underwater tunnel, linking the Japanese islands of Hokkaido and Honshu under the Tsungaru Strait. Completed in 1988, the tunnel is 51.7 km (32.3 miles) in length.
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