How open is an economy to international trade and globalization is always of great interests to economists and policy makers. In the growth literature, we would like to know whether a more open economy grows faster (Frankel and Romer, 1999; Rodriguez and Rodrik, 2001; Dollar and Kraay, 2003). The answer to this question will provide the foundation for promoting trade liberalization or even free trade as an engine for growth. In the wages and employment literature, we would like to understand whether trade liberalization leads to growing wage inequality between skilled and unskilled workers, and even the off-shoring of low wage jobs (Feenstra and Hanson, 1998).
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机译：经济对国际贸易和全球化的开放程度一直是经济学家和政策制定者的重大利益。在增长文献中，我们想知道更开放的经济是否增长更快（Frankel和Romer，1999； Rodriguez和Rodrik，2001； Dollar and Kraay，2003）。这个问题的答案将为促进贸易自由化甚至自由贸易作为增长的引擎提供基础。在工资和就业文献中，我们想了解贸易自由化是否会导致熟练工人与非熟练工人之间的工资不平等加剧，甚至导致低薪工作的离岸外包（Feenstra and Hanson，1998）。
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