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British Prime Minister Theresa May leaves after the switch-on of the Christmas tree lights outside 10 Downing Street with three children in London, Britain on Dec. 6, 2018. (Xinhua/Han Yan)
British Prime Minister Theresa May leaves after the switch-on of the Christmas tree lights outside 10 Downing Street with three children in London, Britain on Dec. 6, 2018. (Xinhua/Han Yan)