一辆辆车来，一辆辆车走。车上拉的都是灯。
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could be written for deriving these types:
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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%.
· 徐丽 · 来源：tutorial资讯