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Over one thousand people dip into the sea during the Nieuwjaarsduik (New Year's Dive) in Bloemendaal, the Netherlands, on Jan. 1, 2018.(Xinhua/Sylvia Lederer)

Over one thousand people dip into the sea during the Nieuwjaarsduik (New Year's Dive) in Bloemendaal, the Netherlands, on Jan. 1, 2018.(Xinhua/Sylvia Lederer)