monopoly ·noun
Definition: control by a company or group over all of a type of business or activity Level: C2
历史上，这家国家铁路公司垄断了所有的客运铁路服务。
Historically, the national railroad company held a ___monopoly on all passenger rail services.
缺乏竞争是由于这家科技巨头在智能手机市场的垄断地位。
The lack of competition was due to the tech giant's ___monopoly in the smartphone market.
拆分企业垄断对于促进创新和公平定价可能至关重要。
Breaking up a corporate ___monopoly can be essential for fostering innovation and fair pricing.