highly developed areas造句

• The groundwater resources have been suffering from varying degrees of pollution in the highly developed areas of all countries in the world , therefore , it has become an important work for every country ' s water resource departments to seek alternative water sources
  综观世界各国的高度开发地区中，地面淡水资源均已遭受不同程度的污染，因此，寻求替代水源成为各国水资源单位之重要工作。