Modular knowledge representation and structural knowledge base organization can reduce the com-plication of knowledge base maintenance.

知识表示模块化和知识库组织结构化有助于降低知识库维护的复杂性。

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Constructivism believes that the essence of learning is a process of individual positive construction. The learning contents include structural knowledge and non structural knowledge.

建构主义认为学习的本质是个体积极主动的建构过程，学习的内容不仅包括结构性知识，而且包括非结构性知识。

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Despite the recession kicked off in 2008, many leaders were recognizing that their dependence on talent was structural in a knowledge economy.

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One goal of a system of public education ought to be to make that level playing field a structural reality, distributing access to knowledge and information as widely as possible.

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