metropolis A term applied loosely to any large city, but specifically to that city in a country which is the seat of government, of ecclesiastical authority, or of commercial activity(一个不严谨地用于任何大城市的术语，但特指在一个国家政府或教会当局或商业中心所在地的城市。)
planned urban development Any physical extension of, or changes to, the uses of land in metropolitan areas following certain preparations or designs(城市物理上的延伸或改变，在大都市地区设计和使用土地的若干准备。)
