但由于完全竞争事实上的不可能性，垄断又无所不在。
However, monopoly exists almost everywhere for the impossible of complete competition.
之间的完全竞争和垄断的对比是取代竞争网络模型。
The contrast between perfect competition and monopoly is replaced with a network model of competition.
该模型能处理完全竞争以及前苏联与东欧、中国、印度等垄断的碳市场结构。
The model can simulate the perfect competition and an oligopoly carbon market.
第四节解释了完全竞争和寡头垄断的含义。
Section four explains the meanings of perfect competition and oligopoly.
垄断竞争模型产品有差异，但不能完全替代。模型不一定在于现实性，而在于其简单性。
The main appeal of the monopolistic competition model is not its realism, but its simplicity.
垄断竞争模型产品有差异，但不能完全替代。模型不一定在于现实性，而在于其简单性。
The main appeal of the monopolistic competition model is not its realism, but its simplicity.
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