The three gorges blocks are a double system, one for upstreamtraffic, and the other for downstream.
三峡船闸是双线系统，一条上行，一天下行。
2
Plug in a competitors domain and view the upstream sites to see where they're getting traffic from and the downstream sites to see what offers they're promoting.
塞在竞争对手域和视图上游网站看到他们得到流量和下游网站看看他们推广。
3
This protocol not only allocates upstream bandwidth dynamically, but also has the consistency of traffic management, high bandwidth efficiency and low cell delay.