求翻译：在2008年金融危机发生后，希腊等欧盟国家所发生的债务危机。欧洲国，货币高估使得出口始终较差，而没有灵活的货币政策，政府不得不依靠投资和家的主权债务危机有其历史、体制和自身的原因，但最根本的原因是这些国家的经济失去了“生产性”。在希腊发生的金融危机严重影响居民消费，导致经济下滑消费拉动经济，赤字不断累积。赤字与出口下滑的恶性循环最终使得希腊的主权信用风险逐步积累，并在本次经济危机中完全暴露出来。就欧盟而言，他们面临着科技很难水平短期内提升和币值要保持稳定的双重挑战。是什么意思？

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The financial crisis occurs after 2008, European Union countries and so on the Greece occur debt crisis.The European country, the currency overestimation causes the export to be bad throughout, but does not have the nimble monetary policy, the government to be able not but to depend upon the investm

During the 2008 financial crisis, Greece and other EU countries the debt crisis. European countries, weak currency makes exports always overestimated, and has a flexible monetary policy, the Government had to rely on investment and sovereign debt crisis in its history, institutions and their own rea