After several years of cultivation and harvest, the site would be restored at a cost much lower than the price of excavation and reburial, the standard practice for remediation of contaminated soils 画线句子是什么结构？ —————————— lower than the price of excavation and reburial是形容词短语作cost的后置修饰语(就是后置定语)。the standard practice for remediation of contaminated soils 是整个句子的同位语。