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目前，北京正在加紧城市隔离地区绿化建设，计划建设２４０平方公里绿化带。这是首都绿化建设的一项重要举措，它的建成必将大大改善首都的生态环境，提高首都的国际形象。为使这项利国利民的生态工程能够充分发挥他的生态价值和社会效益，对这项工程的建设特提一点建设，以供?
At present, Beijing is stepping up afforestation in urban isolated areas and plans to build a 240-square-kilometer green belt. This is an important measure for the greening of the capital and its completion will surely greatly improve the ecological environment of the capital and enhance the international image of the capital. In order to enable this ecological project of benefiting the country and the people to give full play to his ecological value and social benefits, we should give some advice to the construction of this project.