在城市里,土地的有效利用显得特别重要。为了尽量少占土地,城市建筑都向空中发展,建发多层或高层建筑。现在建筑师在发展高层建筑的同时,非常注意发展地下室建筑,如大型停车场、仓库甚至百货商场和地下交通设施(地铁)等。地下建筑使大城市能够更好地发挥其应有的各种社会功能。 In cities, the effective use of land is particularly important. In order to occupy as little land as possible, urban buildings are developed into the air and multi-storey or high-rise buildings are built. While developing high-rise buildings, architects are now paying attention to developing basement buildings such as large parking lots, warehouses, even department stores, and underground transportation facilities (subway). Underground architecture enables big cities to better perform their various social functions.