If present, this value indicates the protocol-level extension (s) the client wishes to speak.

这个值代表客户端计划使用的协议级别扩展信息。

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Each line is prefixed with the protocol level within the packet that was scanned.

对于所扫描的数据包内的所有行，使用协议级别作为前缀。

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However, this is an issue that can be controlled on the client side and, therefore, no particular mechanism on the server side or on the protocol level is required to remedy this situation.

但这个问题客户端可以进行控制，因此，服务器端或协议层不需要特别的机制来处理这一状况。

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An attributional accounting protocol that relies on facilities-level GHG balances to report net CO2 uptake and track otherwise unregulated GHG emissions throughout fuel and feedstock supply chains.

FORBES: Rethinking Life-Cycle Fuel Regulations