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World's longest undersea high

来源:International Investigation news portal编辑:politics时间:2024-05-21 19:40:27
The<strong></strong> massive tunnel boring machine named

The massive tunnel boring machine named "Yongzhou", designed for the groundbreaking Jintang undersea tunnel project, rolls off the production line, Feb. 26, 2024 in Changsha, central China's Hunan Province. (Photo/China News Service)

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