2011年三季度,全球经济进入新一轮危险时期。美国经济疲软程度超乎预想,债务上限谈判僵持不下,导致美国主权评级被首度下调;欧洲主权债务危机持续恶化,并蔓延到意大利和西班牙等大型经济体,欧洲银行业危机再现。由于市场大幅动荡,“二次衰退”风险急剧上升,发达经济体央行再度携手合作注入流动性。为应对挑战,预计在“扭转操作” In the third quarter of 2011, the global economy entered a new round of dangerous period. The unexpected weakness of the U.S. economy and the stubbornness of the debt ceiling negotiations resulted in the first reduction in the sovereign rating of the United States. The sovereign debt crisis in Europe continued to deteriorate and spread to large economies such as Italy and Spain. The banking crisis in Europe reappeared. Due to the sharp market turmoil and the sharp rise in the risk of “second recession,” the central banks of developed economies once again worked together to inject liquidity. In response to the challenge, is expected in the “reverse operation ”