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China's polar icebreaker Xuelong 2, or Snow Dragon 2, is seen at the port of Cape Town of South Africa on Jan. 20, 2020. (Xinhua/Liu Shiping)
China's polar icebreaker Xuelong 2, or Snow Dragon 2, is seen at the port of Cape Town of South Africa on Jan. 20, 2020. (Xinhua/Liu Shiping)