Greening on roofing

• 屋顶绿化

Greening on roofing的用法和样例：

例句

1. Roof greening, espacially to existing building is an exigency problem to be researched.From the position of society development,it has operation significance.
   屋顶绿化，尤其是已建建筑的绿化改造研究是迫切的，从社会发展来看，具有重要的现实意义。