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Mujinga Kambundji of the Switzerland reacts after the women's 200m final at the 2019 IAAF World Athletics Championships in Doha, Qatar, Oct. 2, 2019. (Xinhua/Li Gang)

Mujinga Kambundji of the Switzerland reacts after the women's 200m final at the 2019 IAAF World Athletics Championships in Doha, Qatar, Oct. 2, 2019. (Xinhua/Li Gang)