Investable capital funds and investing desire are the necessary and sufficient conditions for asset bubbles. 摘要资金和投资意愿是产生资产价格泡沫的充分必要条件。
The Fed chief said near-zero interest rates were not fuelling asset price bubbles in the US and that it was not the Fed's job to prevent bubbles abroad. 这位美联储主席称，接近零利率的政策并未加剧美国的资产价格泡沫，而防止国外出现泡沫不是美联储的职责。
