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We call those works of art concrete that came into being on the basis of their inherent resources and rules - without external borrowing from natural phenomena, without transforming those phenomena, in other words: not by abstraction.
我们把那些根据其内在资源和规则而产生的艺术作品称为具体的，而不是从外部借用自然现象，也就是说，不是通过抽象来改变这些现象。