To make the comparison, you have to account for differences in purchasing power over time, as well as between countries.

为了进行比较，你必须算入不同时期，以及不同国家之间的购买力差异。

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There exist differences in the requirements between the department of accounting and the tax department on the accounting of tax credit in purchasing when paying by instalments.

在分期付款购货进项增值税抵扣的核算上，会计部门的处理与税务部门的规定存在差异。

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The paper analyzes the differences between global sourcing and international purchasing and the factors impacting global sourcing.

分析了全球采购与国际采购的差异以及影响全球采购的成功因素。

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The Chinese economy is set to become as large as that of the US by around 2016 when assessed in purchasing power parity terms, which factor in price differences between countries, it added.

CNN: OECD: China forecast to overtake U.S. by 2016