摘 要: | Before 1980,in the development ofChina's cities,emphysis was laid on theconstruction of new cities and expansionof new urban districts.As for old citiesand old urban districts,the principle of“full utilization and gradual transforma-tion”was adopted.Therefore,accordingto general comprehension,old cities main-ly refer to the areas which were formed inhistory and need to be maintained andtransformed now,and they usually in-clude inner city and areas built before
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