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So what factors contribute to these large variances in price for the same bottle of wine ?

那么，是什么因素造成同一款葡萄酒会有如此大的价格差异呢？

Quantifying labour shortages is extremely difficult given large variances by region , industry and skill level .

鉴于地区、行业和技能水平上的巨大差异，要量化劳动力短缺是极其困难的。

By reducing these variances , quality would be improved and a huge amount of cash could be saved .

为削减这些差异，就必须要大幅提升质量以及节省大量现金。

Point estimates and estimates of corresponding variances were calculated using statistical software to account for the complex sample design .

点估计和对应的估计方差使用统计软件进行计算以解释复式采样设计。

The baseline information is used to calculate variances against scheduled information .

比较基准信息用于计算与当前规划信息的差异。