theory ·noun (PRINCIPLES)
Definition: the set of principles on which a subject is based Level: C2
经济理论提供了一套分析金融体系的原则。
Economic ___theory provides a set of principles for analyzing financial systems.
博弈论在经济学和政治学中有许多应用。
Game ___theory has numerous applications in economics and political science.
现代科学理论建立在经验证据和逻辑推理之上。
Modern scientific ___theory is built upon empirical evidence and logical reasoning.