refine /riˈfain/ vt. 精炼，精制：refine things to make them more pure 精炼东西使它更纯；refine crude petroleum提炼原油

 refinery /riˈfainəri / n. [c] 提炼厂，精炼厂：an oil refinery炼油厂They built a sugar refinery.他们建起了一座榨糖厂。The purpose of oil refinery is to refine crude petroleum.炼油厂的主要工作是提炼原油。