Crossrail造句怎么写

After decades of wrangling, there is agreement at last on a fast underground Crossrail linking suburbs west and east, but this will not be open until 2017 at the earliest and the cost has spiralled.

Meanwhile Crossrail is essential in order to cope with London's growing population.

经过数十年的争论，终于达成协议，建设一条连接东西郊的快速地铁（伦敦横贯铁路，Crossrail），但是项目动工时间不会早于2017年，而且工程成本也在不断增加。