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奥巴马,这个曾经以“变革”为竞选口号的美国总统,入主白宫后,将会在社会经济政策方面给美国带来哪些变化?
Obama, the U.S. president who once used the slogan of “change” as his election campaign, will bring changes to the United States in the area of social and economic policies after he joins the White House.