It is very difficult to get the security in sensor networks because of the limited resources of nodes and the wireless communication between nodes.

传感器网络中节点有限的资源以及采用无线的方式转发数据使得在传感器网络内的安全性目标很难实现。

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Due to the limited resources in wireless sensor networks, it is difficult to design an effective security authentication mechanism.

传感器网络的资源受限性给它的安全认证机制设计带来很大的困难。

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