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Indeed , if summers had been fed chair five years ago , quantitative easing might never have occurred .

实际上，如果萨默斯在5年前当上了美联储主席，量化宽松或许就根本不会发生。

According to the united nations , half of the 10 deadliest disasters between 1975 and 2008 occurred after 2002 .

据联合国（theUnitedNations）统计，1975至2008年期间爆发的10次最致命的自然灾害中，有一半发生在2002年以后。

I also think that another significant shift that has occurred is the relationship between the public and private sectors .

此外，我认为另一个已经发生了的重要转变，是公共部门与私营部门之间的关系。

History 's second-most damaging nuclear accident occurred in 1957 at russia 's mayak plant in the kyshtym province .

史上第二严重的核事故发生在前苏联克什特姆省的马雅克核燃料处理厂。

The incident under investigation in japan occurred last year .

正在调查中的日本事件发生在去年。