There is a bright future in the development of roof garden projects.
开发屋顶花园具有十分广阔的前景。
However, the development of our roof garden still drop behind the abroad a lot.
然而目前，我国城市的屋顶绿化发展相较国外还有着较大的差距。
参考来源 - 城市屋顶花园推行迟滞问题的探讨和应对The plants environmental adaptabilities and growth potential were appraisedwith 5-point appraisal system. Accordingly, 89 species were screened out by their good performances on the basis of existing roof garden.
运用五分制评价法从植物的生长势、适应性表现方面对部分植物的生长情况和环境适应性进行评价，在现有屋顶绿化基础上筛选出表现优良的植物89种。
参考来源 - 西北地区城市屋顶花园建设的初步研究N-COUNT（可数名词） A roof garden is a garden on the flat roof of a building. 屋顶花园