At its most basic level, life is what replicates itself — but how did it begin?

在生命的最初级阶段，它不过是在自我复制——但这是如何开始的？

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By 2005, with GDP averaging about 25 per cent above its early 1990s level, life satisfaction was typically back to its earlier level, but was arguably still below pre-transition values.

2005年，在GDP比上世纪90年代初期平均高出25%的情况下，生活满意度却仅仅回复到其转型初期的水平，很可能仍低于转型前的水平。

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ObjectiveTo Study whether ORMDL3 expression level, life-style and indoor air quality were associated with childhood asthma in Beijing, China.

目的研究北京地区儿童ORMDL3基因表达水平、生活方式、室内空气质量与哮喘发生的相关性。

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ObjectiveTo Study whether ORMDL3 expression level, life-style and indoor air quality were associated with childhood asthma in Beijing, China.

目的研究北京地区儿童ORMDL3基因表达水平、生活方式、室内空气质量与哮喘发生的相关性。

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