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，更多细节参见同城约会
加码研发、头部集聚，成为贯穿过去五年产业发展的主旋律。
Immigration boosts innovation and wages in the US. The positive dynamic impact of immigration on innovation and wages dominates the short-run negative impact of increased labor supply. Increased immigration to the US since 1965 is estimated to have increased innovation and wages by 5%.
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