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A man with a child stands on the Eiserner Steg footbridge amid snow in Frankfurt, Germany, on Dec. 16, 2018. A snowfall hit Frankfurt on Sunday. (Xinhua/Lu Yang)
A man with a child stands on the Eiserner Steg footbridge amid snow in Frankfurt, Germany, on Dec. 16, 2018. A snowfall hit Frankfurt on Sunday. (Xinhua/Lu Yang)