2009—2010年的冬天,北半球大部分地区都遭受了数十年甚至百年一遇的寒冷天气。与自然气候形成呼应的全球经济,2009年经历了非常困难的一年。这是自上世纪30年代“大萧条”以来,全球经济最为严重的一场危机。在金融危机的冲击下,制造业大国都受到了重大影响。全球工程机械行业巨头卡特彼勒2010年1月27日 In the winter of 2009-2010, most parts of the northern hemisphere have suffered from cold weather for decades or even centuries. The global economy, echoing the natural climate, experienced a very difficult year in 2009. This is the most serious crisis in the global economy since the Great Depression of the 1930s. Under the impact of the financial crisis, major manufacturing countries have been greatly affected. Global construction machinery industry giant Caterpillar January 27, 2010