求翻译：在国际工程中，建筑材料费用占工程造价的比例一般都超过50％，对项目的盈亏起着决定性作用。而近年来，石油、钢材等主要建筑材料的价格变化幅度十分惊人，国际工程承包商面临着巨大的材料价格风险。本文对国际工程承包商如何利用合同、工程适用法律以及掌握的市场信息规避和降低建筑材料价格风险进行了分析。是什么意思？

In international engineering, construction materials costs are generally more than 50% per cent of construction cost, profit and loss plays a decisive role on the project. In recent years, the price variations of the main building materials such as oil, steel is very impressive, international engineering contractors faced an enormous amount of material price risks. Article on international engineering contractors on how to use contract, applicable laws and market information available to the avoidance and reduction engineering construction materials price risk analysis.