Everybody has a language system, an individual "bank of active language knowledge", which contains a variety of types of writing.

每个人都掌握了一套包含不同语体的语言体系，既个人的“活用语言知识库”。

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Philosophy is no longer knowledge system which produces propositions, but thinking activities to interpret propositions and clarify the logic of language.

哲学将不再是生产命题的知识体系，而是解释命题、澄清语言逻辑的思想活动。

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A universal system model about database natural language interface, which separates the programming from Knowledge-Base is constructed.

构造了一个程序设计与知识库相分离的通用的数据库自然语言接口系统模型。

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Good knowledge of French (as a working language of the United Nations system) would be an asset.

UNESCO: Criteria & Requirements