a law of economic development的用法和樣例：
例句
- The system theory has provided the theoretical foundation to investigate the development rule of the regional e-conomy scientifically.
系統論為更科學地考察區域經濟發展規律提供了理論基礎。 - Utsunomiya The study is based on the spirit of history from the perspective reveals the laws of historical development.
宇都宮的研究主要立足於從精神史的角度來揭示歷史的發展規律。
