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A man wearing a mask participates in the Lucerne Carnival in Lucerne, Switzerland, Feb. 8, 2018. The Lucerne Carnival is held here from Feb. 8 to Feb. 13. (Xinhua/Michele Limina)
A man wearing a mask participates in the Lucerne Carnival in Lucerne, Switzerland, Feb. 8, 2018. The Lucerne Carnival is held here from Feb. 8 to Feb. 13. (Xinhua/Michele Limina)