The author points out that, in current situation, we determines price of domestic oil product by adding additional corresponding cost and profit based on weighted international prices.

现阶段我国采取国际三地原油价格加权基础上追加相应成本和利润的办法来确定国内成品油价格。

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If import tariffs are weighted by the volume of trade in each product, the average faced by exporters from outside the EU into the single market has fallen to around 3%.

如果以各种商品的交易量来衡量进口关税，那么欧盟之外的出口商进入统一市场所面临的平均关税大约下降了3%。

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That's the product of a weighted average of national fuel prices from the previous five months that's skewed toward the more recent months.

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