巴西是世界第五大人口大国，根据世卫组织的统计，其年均道路交通死亡率恰好也位居第五——每10万居民中有18人死于道路交通事故。
Brazil, the world's fifth most populous country, ranks also fifth in terms of annual road traffic mortality with 18 deaths per 100 000 inhabitants, according to WHO.
地区城镇人口密度与地区安全生产事故死亡率的关系微弱。
Moreover, the density of population has weak relation with the mortality of regional prnduetion safety accident.
在基于事故发生率和事故产生的后果两个方面，分别对人口风险、环境风险和财产风险进行了度量，并给出了风险度量的模型。
The risk is divided into three parts as the population risk, environment risk and property risk; a model is developed to measure these risks.
在基于事故发生率和事故产生的后果两个方面，分别对人口风险、环境风险和财产风险进行了度量，并给出了风险度量的模型。
The risk is divided into three parts as the population risk, environment risk and property risk; a model is developed to measure these risks.
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