dual economic theory的用法和樣例：
例句
- The first part has a discussion on the theory of dual economic structure and the demonstrational analysis on it.
第一部分論述了二元經濟結構理論及實證分析。 - Brunei economic development has experienced a transition from a relatively single resource economy to a diversified one.
汶萊經濟發展經歷了從較為單一的資源經濟到多元經濟結構轉變的過程。
