World's largest ship lock starts operation officially on Yangtze River
The giant ship lock of the Three Gorges Water Control Project on the Yangtze River opened officially for navigation on Thursday following a one-year successful trial operation.
Construction of the two-way five-step lock, the largest in the world, took nine years as from April 17, at a cost of 6.2 billion yuan (746.99 million US dollars)
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