1
duopoly of [two parties]
用 of 说明构成双头垄断的两方，常与 the 连用。
The duopoly of the two telecom companies keeps prices high.
两家电信公司的双头垄断使得价格居高不下。
双头垄断
duopolies — plural of duopoly
先理解核心含义，再看它在真实句子里的用法。
双头垄断
a market situation in which two suppliers dominate
The duopoly of the two telecom companies keeps prices high.
两家电信公司的双头垄断使得价格居高不下。
一种经济状况,其中两个卖方对某种商品的市场拥有最大的控制权。
An economic condition in which two sellers exert most control over the market of a commodity.
两个实体或个人主导某一领域的状态。
The domination of a field of endeavour by two entities or people.
同一城市或社区中两个或更多广播电台或电视台共有所有权的情况。
A situation in which two or more radio or television stations in the same city or community share common ownership.
The two biggest phone makers now hold a duopoly in this country.
国内最大的两家手机制造商如今占据双头垄断地位。
Duopolies often mean fewer choices and higher prices for consumers.
双头垄断往往意味着消费者的选择更少、价格更高。
The new law may break the duopoly that has existed for years.
新法律可能会打破持续多年的双头垄断。
用 of 说明构成双头垄断的两方，常与 the 连用。
The duopoly of the two telecom companies keeps prices high.
两家电信公司的双头垄断使得价格居高不下。
用 in 指双头垄断出现的领域，常接行业或市场。
A duopoly in the mobile operating system market limits consumer choice.
移动操作系统市场中的双头垄断限制了消费者的选择。
用 between 强调双方之间的对抗或共谋关系，后接 and 连接的两方。
The duopoly between the two airlines has led to higher fares.
两家航空公司之间的双头垄断导致了更高的票价。
Not this
The two companies form duopoly in the mobile market.
Use this
The two companies form a duopoly in the mobile market.
duopoly 是可数名词，指两家企业主导市场的情形；单数形式前需要加不定冠词 a/an。中文说“双头垄断”没有冠词，学习者容易漏掉，但英语必须有 a duopoly。
Not this
There are several important duopoly in the global industry.
Use this
There are several important duopolies in the global industry.
duopoly 的复数形式是 duopolies（辅音字母加 y 结尾，把 y 改成 i 再加 -es）。表示“多个双头垄断”时必须用复数，不能保留原形。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
双头垄断市场
The two companies dominate the duopoly market for mobile operating systems.
这两家公司主导着移动操作系统的双头垄断市场。
形成双头垄断
The two suppliers effectively form a duopoly in domestic aviation.
这两家供应商实际上在国内航空业形成了双头垄断。
打破双头垄断
Regulators want to break up the duopoly in the telecom sector.
监管机构希望打破电信行业的双头垄断。
双头垄断势力
Consumers may be harmed by the duopoly power of the two dominant platforms.
消费者可能因这两大主导平台的双头垄断势力而受到损害。
Use duopolies naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
记住 monopoly（大富翁式垄断）开头 mono 是“单”，换成 duo（两），就是两家说了算的双头垄断。
语域：formal 常见场景：经济学论文、商业新闻报道、市场分析 该词多用于经济学和商业语境，属于较正式的术语；日常口语中较少出现，通常用“两家垄断”等更通俗的说法替代。
monopoly and oligopoly share the stressed ending /ˈɒpəli/ in British English and rhyme with duopoly. duo and poly are spelling lookalikes with different sounds.
Dictionary facts from ECDICT, WIKTIONARY.