China’s GDP will almost certainly surpass that of the US within a decade, owing to the size of its population and its impressive economic-growth rate. But, measured by per capita income, China will not equal the US for decades, if then.
得益于庞大的人口数量以及令人瞩目的增长率，中国的GDP几乎肯定会在十年内超过美国。但如果用人均收入计算的话，中国还需要几十年才能赶上美国。