Submarines – Extreme Technology – Big Bigger Biggest

40億ドルの米国の巨大潜水艦の内部での生活

海洋を巡回する40億米ドルの原子力潜水艦の内部の生活

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全速力で海をパトロールする巨大な 40 億ドルの潜水艦

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Boarding a US NAVY NUCLEAR SUBMARINE in the Arctic - Smarter Every Day 240

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