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Li Ling of China warms up during the qualification round of women's pole vault at the 2019 IAAF World Athletics Championships in Doha, Qatar, Sept. 27, 2019. (Xinhua/Li Ming)
Li Ling of China warms up during the qualification round of women's pole vault at the 2019 IAAF World Athletics Championships in Doha, Qatar, Sept. 27, 2019. (Xinhua/Li Ming)