当然，美国确实在1945年后维持了经济主宰力：二战让许多国家变成了焦土，这意味着美国贡献了全球GDP的近一半。
Of course, America did maintain economic dominance after 1945: the devastation of WWII in so many countries meant that the US produced nearly half of global GDP. That position lasted until 1970, when the US share of global GDP fell to its pre-war level of one-quarter.