However, the atrocious environments of WSNs and the constraint of resources in nodes, such as energy, memory, and processing capacities, make it hard to maximum the lifetime of the whole network.
但由于无线传感器网络工作环境的恶劣和节点资源受限(能量、内存和处理能力)等因素，使得延长网络的生命周期极为困难。
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