oligopoly monopoly的用法和樣例：
例句
- Oligopoly When a particular market is controlled by a small group of firms.
寡頭壟斷指一種貨品或服務的市場被少數公司控制的情況。 - The oligarchic monopoly is a kind of efficient market structure, the advantage of which can push the development of the completely well-off society.
摘要寡頭壟斷是一種有效率的市場結構，這種市場結構的優勢有助於推進我國全面的小康建設。
