A route is a sequence of one-way streets connecting two intersections.
一条路径由一系列将两个路口连通的单行线组成。
2
If it is not a pure two-way path which includes some asymmetric links, the source needs to spread the RACK along the route and inform the route-related nodes to establish the corresponding route.
According to the Third, "Chen will be" cross-strait air transport signed a supplemental agreement, the two sides agreed to open a second southbound lane and northbound lane two-way direct air route.