longest man made waterway（関連順）

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ChinaFromAbove|Beijing: The North End of the Grand Canal

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This is the LONGEST MAN-MADE CANAL in the world! 😲😲😲 #shorts #facts #generalknowledge

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Longest man made canal in the world : (not suez canal)

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World Largest Canal | GEOBits Officials

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1,700 km Long! The World’s Largest Man-Made Canal

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結果 : longest man made waterway