Up to a point, flyovers and underpasses, being the first really decisive steps to speed up and divert traffic, have eased the situation, but a considerable contribution towards a satisfactory solution can be made by underground railway networks.

• 在某种程度上,立交桥和地下道的建设,在加速和分流交通方面迈出了具有决定意义的第一步,从而缓解了交通不畅的局面。但要从根本上解决交通问题,仍须依赖地铁系统。