1、The company has become a monopolist in the market, controlling the prices and supply of the product.
这家公司已经成为市场上的垄断者，控制着产品的价格和供应。
2、The government is taking measures to prevent monopolists from unfairly controlling the market.
政府正在采取措施，防止垄断者对市场进行不公平控制。