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20:28, 18-Jun-2019
Chinese research vessel returns from Mariana Trench
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China's research vessel Kexue, or Science, started its return on June 15 after completing a scientific expedition to the Mariana Trench, the world's deepest natural trench.
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Copyright © 2018 CGTN. Beijing ICP prepared NO.16065310-3
Copyright © 2018 CGTN. Beijing ICP prepared NO.16065310-3