《国家地理：纳粹巨型战舰》探讨了纳粹德国海军的雄心与挑战，深揭科技背后的历史。7m凹凸凹凸

　　Hitler's "unsinkable ship," the Bismarck, was deployed in 1941 to wreak havoc on Allied ships in the Atlantic, but settled on the ocean floor after just nine days at sea. NGC investigates: Who really sank the Bismarck? Explore the wreckage in brilliant HD as we break down the events leading to the ship's final naval battle. Later, hear the stories of camaraderie between British... (展开全部)