[countable] (especially NAmE) (BrE usually ˈbrownfield site) an area of land in a city that was used by industry or for offices in the past and that may now be cleared for new building development棕色地带（城市里过去的工厂或办公用地，现在可清理平整为新的建设项目用地）an area of land that was used by industry and that could be used for new development, but may be affected by dangerous substances棕色地带（指过去的工业用地可为新的开发项目所用，但可能会受到危险有害物质的污染）  ➡  greenfield