POP (Post Office Protocol) is used by the client to retrieve mail from an Internet server.

客户机利用POP（邮局协议）从因特网服务器上检索邮件。

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After a brief analysis of fixing electric meter for office building, the design of meter system for measuring electricity based on Ethernet transmission and TCP/IP protocol is presented in this paper.

在分析办公楼加装电表系统的情况以后，介绍了一种基于TCP/IP协议利用以太网传输的电能计量电表系统的设计与实现。

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The basic voice call flows are designed on the basis of MGCP protocol and SIP protocol and includes local office flow and inter-office flow.

基本语音呼叫流程设计基于MGCP协议和SIP协议，包括本局呼叫流程和出入局呼叫流程。

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David Solomon and Katie Jack from the protocol office in Washington will not reveal what Mrs Clinton is taking with her for the presidents and prime ministers she will be meeting.

BBC: On the road with Hillary Clinton

The Head of Protocol at the Foreign Office confirmed this view, which means that, despite twelve years of service, Mrs Jimenez has never, legally, been a member of the mission.

BBC: NEWS | UK | Magazine | Diplomatic immunity? Not from the taxman

And Australia's new prime minister, Kevin Rudd, received plaudits for ratifying the Kyoto protocol immiediately after taking office on December 3rd.

ECONOMIST: A deal is finally struck in Bali