Operating benefit is a problem that all of insurance company are concerned about. The key of profit and loss for insurance business is claim ratio index.
经营效益是每个保险公司都关心的问题，保险经营盈亏的关键是赔付率指标。
The S&P 500 index is trading on a price-earnings ratio of around 20, based on 2009 forecasts for operating earnings.
基于对09年运营收益的预测，标准普尔预计市盈率在20左右。
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