But there is no evidence that oligarchs significantly outperform the rest of the economy , and the study concludes that they are in fact less efficient managers of assets than smaller , more dynamic private owners 但没有证据表明，寡头的表现明显优于其他经济部门，而且该研究归结说，与规模更小且更有活力的私人所有者相比，寡头管理者实际上效率更低。
The largest study to date , published last february in the journal of the national cancer institute , surveyed 420 , 000 cell - phone users from 1982 and 1995 and concluded there was no evidence of a brain - cancer link 去年2月《国立癌症研究所杂志》公布了一项迄今为止规模最大的研究结果- -该项研究调查了42万人，他们分别从1982年和1995年开始使用手机，结论是没有证据表明脑癌跟使用手机有关。
According to the world health organisation , there is no scientific evidence to suggest that pets have spread the virus , which is believed to have migrated from animals to human beings in the cramped farming communities outside guangzhou , where many breeders share accommodation with their livestock 据世界卫生组织说,科学上还没有证据表明这种病毒是由宠物传播的.这种病毒相信是由于在广州附近的农村,人和家畜在极其狭小的空间里共存而产生和传播的
The fifth chapter makes a demonstration research on chinese public companies " ownership structure and agency conflict , and finds out the concentrated stock structure is propitious to reduce agency costs , but there is no evidence indicating the competition character of family - controlled public companies " financial data 第五章就中国上市公司股权结构和代理冲突进行了实证研究。发现股权集中有利于降低代理成本，但没有证据表明家族类上市公司财务指标的竞争性。
