city cycle造句

• Furthermore, it also needs to guarantee the quality of economic growth making the economy system and ecology system of the city cycle in a benignant way the city's economy system and the ecological environment develop coordinately
  也就是说，生态城市要有合理的产业结构、能源结构和生产布局，使城市的经济系统和生态系统能协调发展，形成良性循环，实现城市经济社会与生态环境效益的统一。