好词典

theory

UK //ˈθɪəri//US //ˈθɪri//

词源

源自希腊语 'theoria',意为 '观察、思考',后经拉丁语 'theoria' 传入英语。

noun

❶ 理论,指对某一现象或问题的系统性解释,通常基于观察和推理,但尚未被完全证实。

“Einstein's theory of relativity changed our understanding of space and time.”

(爱因斯坦的相对论改变了我们对空间和时间的理解。)

“Scientists are still testing the new theory about the origin of the universe.”

(科学家们仍在验证关于宇宙起源的新理论。)

❶ 学说或观点,指个人或群体对某一问题的看法或主张。

“He has his own theory about why the company failed.”

(他对公司失败的原因有自己的看法。)

“Different economists have different theories about inflation.”

(不同的经济学家对通货膨胀有不同的观点。)

同义词:hypothesis, concept, idea, principle, speculation

常见短语

in theory — 理论上,指某事在理想或假设的情况下成立,但实际可能不同。

“In theory, the plan should work, but we need to consider real-world challenges.”

(理论上这个计划应该可行,但我们需要考虑现实中的挑战。)

game theory — 博弈论,研究决策者之间策略互动的数学理论,常用于经济学和政治学。

“Game theory helps us understand how competitors might react to each other's moves.”

(博弈论帮助我们理解竞争者如何对彼此的行动作出反应。)