两党制度

例句：

1. 1. The two-party system is the most common form of government in many countries.
   两党制度是许多国家最常见的政府形式。
2. 2. The party system is often criticized for its lack of transparency and accountability.
   两党制度常常因其缺乏透明度和问责制而受到批评。
3. 3. In this country, the two-party system has been stable for decades.
   在这个国家，两党制度已经稳定了几十年。