双寡头垄断
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two - oligopoly 双
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An oligopoly exists when a market has a small number of suppliers, if there are only two suppliers is called duopoly.
寡头垄断存在时，市场有一个小的供应商，如果只有两个供应商被称为双寡头垄断。
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A true duopoly is a specific type of oligopoly where only two producers exist in one market.
真正的双寡头垄断是一种特定的、只有两个生产商存在于市场中的市场垄断行为。
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