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A vendor sells hats on a street in Naples, Italy, July 4, 2019. Sixteen Italian cities, including Naples, have been on heat alert since June 27. (Xinhua/Cheng Tingting)
A vendor sells hats on a street in Naples, Italy, July 4, 2019. Sixteen Italian cities, including Naples, have been on heat alert since June 27. (Xinhua/Cheng Tingting)