The knowledge as function, mechanical function, is necessary.
知识作为功能，机械性的功能，是必要的。
Pragmatists emphasize the practical function of knowledge as an instrument for adapting to reality and controlling it .
实用主义者强调的是知识的实用功能作为一个工具能适应和控制真实的生活。
Theories of constructivism further identify idea, culture and knowledge as the point of departure and emphasize the function of beliefs.
建构主义则进一步把理念、文化、知识作为分析的起点，强调观念的作用。
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