Deciding which index to create is a significant burden for GAE developers.

决定要创建哪个索引对于GAE开发人员来说是一个很大的负担。

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The index, which reflects the overall tax burden in a country, is called macro tax burden.

这种反映一国总体税收负担水平的指标，我们把它称之为宏观税负。

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Air quality levels are analyzed in each city use of gray statistical strategy. The type of urban air pollution is judged by burden rate, which is calculated by the Shanghai air quality index.

利用灰色统计模型分析了各城市空气质量等级，用上海大气质量指数法计算出污染负担率，然后根据污染负担率判断城市空气污染类型。

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Some of this added burden has already come to light in the latest wholesale price index, which showed rising oil costs are driving an increase in manufacturing costs.

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