The various aspect problems in city construction are more and more complex with cities' scale and up-to-dateness continuously growing.
随着城市规模的不断扩大和城市更新水平的不断提高,城市建设中的各个方面问题越来越复杂。
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Dynamic approaches have lots of advantages: they can scaleup to larger problems (instead of creating arbitrary limits), and they don't have the problem of truncations causing security problems.
Problems creep in, however, when we try to scale this up — that is, when we try to gather all requirements, then do all design, then all development, then all testing in a strictly linear fashion.