The rapid expansion of urban areas has in many cases encroached on aluable cultiatable land , and led to a general recognition that deelopment must not be carried at the cost of agriculture .

• 城区的迅速扩大在很多情况下侵占了宝贵的可耕地，使人们普遍认识到发展不能以牺牲农业为代价。