Over the medium to long term, exchange rates are indeed driven by what happens in the real economy. Or, more precisely, they reflect the requirement that the real exchange rate be such that the economy attains both external balance (a small and manageable current-account deficit) and internal balance (no inflationary pressures at home).
这些都是正确的答案，但问题错了。从中期到长期，汇率实际上是由实体经济情况驱动的。或者，更准确地说，汇率反映了，要让经济同时实现外部平衡（小规模、可管理的经常项目赤字）和内部平衡（国内没有通胀压力），真实汇率应该是多少。