求翻译：市盈率不断上升（反映企业估值升高了）是很多新兴市场国家股票价值增长的重要原因。自2003年以来，中国和俄罗斯的股票市场市盈率已翻倍，意味着其资本市场面临潜在的风险。但从长期来看，新兴金融市场仍有巨大的扩展空间， 因为其金融资产仅占全球的14%，远远低于其 GDP 在全球所占的份额（23%）。是什么意思？

The price-earnings ratio is rising, (reflecting increased business valuation) is an important reason for the growth of many emerging market countries, the value of the stock. Since 2003, China and Russia's stock market price-earnings ratio has been doubled, means facing a potential risk to its capit