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1. The study aims to provide astandard mortality rates for the population.
该研究旨在为人口提供标准死亡率。
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2. The standardmortality rates vary depending on the region.
标准死亡率因地区而异。
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3. Thegovernment has released new dataon the standard mortality rates.
政府发布了关于标准死亡率的新数据。