交叉开关是无阻塞网络，允许所有可能的点对点间的同时连接。
Crossbar switch is unblock network, it allows all possible simultaneous connect from point to point.
经过城里那些交通阻塞的路段，我们来到了一条畅行无阻的路段。
After all that traffic in the city, we arrived at a clear shot.
经过城里那些交通阻塞的路段，我们来到了一条畅行无阻的路段。
After all that traffic in the city, we arrived at a clear shot.
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