由于节点的移动，网络拓朴频繁发生变化，一旦节点移动，当前的路由就很容易失效，从而造成通讯中断，这种情况就是链路失效。
Because of node mobility, the network topology changes frequently, moreover once nodes move, the current route is no longer valid and this causes a communication interruption called a link failure.
由于节点的移动，网络拓朴频繁发生变化，一旦节点移动，当前的路由就很容易失效，从而造成通讯中断，这种情况就是链路失效。
Because of node mobility, the network topology changes frequently, moreover once nodes move, the current route is no longer valid and this causes a communication interruption called a link failure.
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