a law of economic development的用法和样例：
例句
- The system theory has provided the theoretical foundation to investigate the development rule of the regional e-conomy scientifically.
系统论为更科学地考察区域经济发展规律提供了理论基础。 - Utsunomiya The study is based on the spirit of history from the perspective reveals the laws of historical development.
宇都宫的研究主要立足于从精神史的角度来揭示历史的发展规律。
