关于一段论文摘要的英文翻译 急啊！

Today is a world of economic globalization. Exchange rate as the price system an important component part of the impact of a country and the development of foreign trade in one of the important factors. According to traditional economic theory, the price system as an important component of the exchange rate, which changes affect a country's balance of trade; under certain conditions, the devaluation of their products can improve international competitiveness, thus helping expand exports and improve trade balance of payments. So for a long time, all countries are spared no effort in the pursuit of even the balance of international payments surplus, resulting in between in contention for the world market share and continued trade friction.