green system的用法和样例：
例句
- Through calculating some landscape indexs, the quantitative analysis on the landscape patterns of the Yichun Central City Green Space System was made.
摘要通过一些景观生态学指数的计算与分析，对宜春市中心城绿地系统规划前后的景观格局进行评价。 - The urban ecologic green space system construction is the important material basis for survival and development of modern cities.
摘要城市生态绿地系统建设，是现代城市生存和发展的重要物质基础。
