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Members of China's 36th Antarctic expedition team take back the trawl used for collecting krill samples aboard China's polar icebreaker Xuelong 2, Jan. 7, 2020. (Xinhua/Liu Shiping)

Members of China's 36th Antarctic expedition team take back the trawl used for collecting krill samples aboard China's polar icebreaker Xuelong 2, Jan. 7, 2020. (Xinhua/Liu Shiping)