英语翻译

题目

英语翻译
First,we find no evidence that the positive association between international trade and income arises because countries whose incomes are high for other reasons engage in more trade.On the contrary,in every specification we consider the instrumental variables estimate of the effect of trade is larger than the ordinary least-squares estimate,often by a considerable margin.Section 2,subsection E,investigates possible reasons that the 4 estimate exceeds the ordinary least-squares one.

答案

首先,我们发现没有证据表明,积极的国际贸易关系和收入的原因是这些国家的收入高的其他原因进行更trade.On相反,我们认为每一个规格的工具变量估计贸易的影响较大比普通最小二乘估计,往往有相当利润.第2节E小节,调查可能原因,估计超过4普通最小二乘之一.