brownfield
adjective [ before noun ] UK uk/ˈbraʊn.fiːld/ us/ˈbraʊn.fiːld/
棕色地带的（指城镇中原为工业用地现准备重新开发的地区）
used to refer to an area of land in a town or city that was previously used for industry and where new buildings can be built
Planners are committed to developing the city's brownfield sites before granting permission to build on the rural outskirts. 城市规划者致力于先开发市内的棕色地带，之后才允许在城市外围建房。