求翻译：　　另外，许多工程所在国政府为了降低工程造价，常常对进口到本国的材料实施减免税的政策，承包商在报价时需要对减免税的建筑材料类别等做出详尽考虑，以免产生损失。如某国际工程，因当地无法提供足量的燃油，承包商只好进口，但在申请免税时，却遭到拒绝，理由是燃油不属于建筑材料。是什么意思？

　　In addition, many projects the host Government in order to reduce project cost, often imposed on the materials imported into the country for tax relief policy, contractors in the quote needs to be made to tax category of building materials, and so when considered in detail to avoid losses. Where an international project, because local was unable to provide enough fuel, the contractor had to import, but at the time of application for tax exempt, but was rejected on the grounds that the fuel is not part of building materials.