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A man wearing a face mask waits for a train in the central train station during the COVID-19 pandemic in Stockholm, capital of Sweden, on Nov. 3, 2020. (Photo by Wei Xuechao/Xinhua)
A man wearing a face mask waits for a train in the central train station during the COVID-19 pandemic in Stockholm, capital of Sweden, on Nov. 3, 2020. (Photo by Wei Xuechao/Xinhua)