From economics point of view, compulsory education and public libraries are the two pillars of social knowledge security system, which ensure the reproduction of social work forces.

论述了义务教育与公共图书馆是社会知识保障制度的两根支柱，保证了社会劳动力的再生产。

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Members of that group have no knowledge of any other records in the system, other than those with their security policy.

那个小组的成员对这个系统中的其它记录是一无所知的，除了那些他们安全策略的记录。

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Web developers ultimately have to keep increasing their knowledge of the system security of their platforms to protect end-users and their own clients.

Web开发者最终必须不断提升他们对自家平台系统安全的了解，以便保护终端用户及自己的客户。

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The clinics will operate as part of a "Plantwise knowledge bank", which is set to begin in June and act as a bio-security early warning system.

BBC: Plant clinics scheme to boost food security