principles of political economy

例句：

1. 1. The principles of political economy are crucial to understanding the workings of a democracy.
   政治经济的原则对于理解民主运作至关重要。
2. 2. His book explores the principles of political economy that shape our world today.
   他的书探讨了塑造当今世界的政治经济学原则。
3. 3.The principles of political economy have been studied extensively in recent years, with implications for global trade and development.
   近年来，政治经济学的原则被广泛研究，对全球贸易和发展产生了影响。