1. The country's government has been accused of becoming an oligarchy, where a few individuals hold all the power.
这个国家的政府被指控成为了寡头政治，少数个人掌握着所有权力。
2. The company's oligarchy controls a significant portion of the country's economy.
这家公司的寡头集团控制着该国经济的重要部分。
