Counter — special metric that can be incremented, decremented or reset to 0.

计数器——可以递增、递减或重置为0的特定度量。

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Each time a packet is forwarded, its Hop Limit value is decremented by one.

每次转发数据包时，其“跃点限制”值将递减一。

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Each time a packet is forwarded, its Hop Limit value is decremented by one.

每次转发数据包时，其“跃点限制”值将递减一。

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