Note the manner in which the individual projects interact with the service portfolio by drawing from it during the Elaboration phase and then contributing to it during the Construction phase.
Energy improvements had to be made out of the $1 billion per year the GSA typically is budgeted for new construction or renovation of its portfolio of federally-owned buildings.
能源的改善必须在每年10亿美元的范围内，这是美国服务总局用于新建筑或改造联邦拥有的建筑的预算。
3
For the portfolio management domain, models have been put forward from a variety of sources, and good work has gone into their design and the construction.