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Sightseeing Submersible Put Into Trial Operation in Sanya
Dec 17, 2015China's first sightseeing submersible "Huandao Jiaolong-1" is put into trial operation on Monday in Yalong Bay in Sanya City, in southern China's Hainan Province. [Photo: Imagine China] China's first sightseeing submersible "Huandao ...