昨天掘进盾构到达位于长江下面的8.95公里长的第二条交通隧道通道末端。

The digging shield for the second passage of the vehicle tunnel reached the end of the 8.95-kilometer line under the Yangtze yesterday.

youdao

在所有不同的深度都有宽阔、狭窄的通道，就像石灰岩中的地下隧道。

There are wide passages, narrow ones at all different depths, like underground tunnels in the limestone.

youdao

连接协议：该协议多路传输加密隧道到多个逻辑通道，通过用户认证协议运行。

Connection protocol: This protocol multiplexes the encrypted tunnel to numerous logical channels, running over the User Authentication protocol.

youdao