对于像世卫组织这样的卫生机构，民事登记系统是最为可靠的出生、死亡和死因统计数据来源。

For health agencies like WHO, civil registration systems are the most reliable source of statistics on births and deaths, and causes of death.

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印度的人口普查部门花了一年时间对该国12亿居民进行统计和特征登记，于今年2月完成工作。

In February India's census authority completed a year-long effort of tallying and biometrically registering its 1.2 billion residents.

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共有100多个国家(占全球三分之二以上人口)缺乏能够提供可靠死因数据的民事登记和生命统计系统。

Over 100 countries, representing more than two-thirds of the world's population, do not have systems for civil registration and vital statistics that produce reliable data on causes of death.

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