similarity theories的用法和樣例：
例句
- Preferences Similarity Theory is the theory that explains the impact of inter-country trade volume from the perspective of demand.
摘要需求偏好相似理論是從需求角度來解釋影響國家間貿易額大小的理論。 - Based on the principles of similarity theory, this paper discusses the process of system simulation and develops the basic procedure of system simulation.
應用相似理論的基本原理研究系統模擬的過程，提出了基於相似理論的系統模擬的基本方法和步驟。
