数学模型是人类认识和改造世界的有效工具。
The mathematical model is the effective instrument for human to know and transform the whole world.
主体力是主体认识和改造客体诸能力的总和。
The power of perceivers is the whole ability for perceivers to know and improve the objective world.
矛盾分析法是人们认识和改造世界的基本方法。
The method of contradiction analysis is the basic way to understand and chang the world.
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