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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它记录每一个公民的出生、婚姻和死亡信息，汇编方方面面的经济数据，收集关于许可证、法律和天气的统计数据。

It keeps records on every birth, marriage and death, compiles figures on all aspects of the economy and keeps statistics on licences, laws and the weather.

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