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China unveiled new dragon-themed drillers that it hopes will build the world's 'longest undersea high-speed railway tunnel'
Tue, 02/27/2024 - 01:43
Tech Insider
'Yongzhou' shield tunneling machine rolls off the production line on February 26, 2024 in Changsha, Hunan Province of China.
Yang Huafeng/China News Service/VCG via Getty Images
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