Today, almost any production process is divided into several phases and finished in different countries, so the tariff taxation policy includes the ideas of tariff effective protection theory.

在全球生产阶段多元化的今天，这种关税政策在很大程度上体现了关税有效保护理论的思想。

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They also find that one of the effective methods to solve their business problem is to evaluate and launch some proper tariff packages.

通过对促销套餐的评估，及时清理无效套餐，适时推出适合市场需求的套餐则成为解决目前固网运营商经营困难的有效手段之一。

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But Cambodia already has an effective tariff of zero, thanks to its long and porous borders and corrupt customs officials.

ECONOMIST: But Cambodia's WTO membership may not make much difference

It's conceivable that Congress will back down from the costly biofuel mandate, or tilt the field to favor corn, or remove the tariff that keeps out the far more cost-effective Brazilian ethanol.

FORBES: International