Recent death registration data were available for 83 countries, comprising 28% of the global population.

83个国家提供了最近的死亡登记数据，占全球人口的28%。

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The population of the city was thinned out by the black death.

这个城市的人口由于黑死病而减少了。

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The population of the city was thinned out by the black death.

这个城市的人口由于黑死病而减少了。

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