如果你观察到一国货币贬值，但同时经常项目恶化了，你会查找何种数据以确定这是一次J曲线效应？即使不存在J曲

线效应，有什么其他的宏观经济变动可以造成货币贬值及经常项目恶化？

You observe that a country's currency depreciates but its current account worsens at the same time．What data might you look at to decide whether you are witnessing a J-curve effect？ What other macroeconomic change might bring about a currency depreciation coupled with a deterioration of the current account，even if there is no J-curve？