For performance reasons, antivirus software is best avoided — which means that for security reasons, you can't allow a network connection to the machine.

出于性能考虑，最好避免使用反病毒软件——这就意味着为了安全起见，不能将该机器连接到网络。

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By using a security gateway device which can translate between security mechanisms, clients and providers can choose the best security mechanisms for their local environment.

通过使用可以在安全机制之间转换的安全网关设备，客户端和提供者可以为本地环境选择最佳安全机制。

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THE worst of times for Colombia’s security were the best of times for its professional footballers.

哥伦比亚安全状况最差的时期却是其职业足球运动员的黄金时代。

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He taught the priority of rights over duties and he argued that the sovereign should serve the lowly interest or the lowly ends of providing peace and security, leaving it to individuals to determine for themselves how best to live their lives.

他主张权力应优先于义务,主张君主应当,尽最大可能缔造和平,以保证人民的安全，主张让给人民自由,让他们决定自己的生活方式。

耶鲁公开课 - 政治哲学导论课程节选

But the answer is we will make decisions based on what is the best for the United States, best for our national security interests and best for having the most effective relationship with Iraq going forward.

WHITEHOUSE: Press Briefing

The emphasis is on providing the best set of teachers for the students, not on providing the best job security for the teachers.

FORBES: Are Unions Anti-Competitive?

The White House said that as the president reassesses the situation in Afghanistan, any decisions will be based on what he thinks is best for national security.

CNN: Reassessing Obama's 'war of necessity'