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A vehicle moves past a billboard in Jonesborough, Northern Ireland, the United Kingdom, on Jan. 31, 2020. The United Kingdom will leave the European Union (EU) on Jan. 31, 2020. (Photo by Paul McErlane/Xinhua)

A vehicle moves past a billboard in Jonesborough, Northern Ireland, the United Kingdom, on Jan. 31, 2020. The United Kingdom will leave the European Union (EU) on Jan. 31, 2020. (Photo by Paul McErlane/Xinhua)