translation.en: Since the 1950s, as the population of the medina grew, basic urban infrastructure such as green open spaces and sewage quickly changed and got highly stressed.
translation.zh: 从二十世纪五十年代起，麦地那的人口不断增长， 户外绿色空间和污水沟等等城市基础设施 随之迅速发生了改变，承受越来越大的压力。