名词
中文翻译：理论
同义词：
['hypothesis', 'principle', 'doctrine']
例句：
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1. Thetheory of relativity was proposed by Albert Einstein.
爱因斯坦提出了相对论理论。
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2.The theory of evolution suggests that all livingthings have descended from a commonancestor.
进化论表明所有生物都来自共同的祖先。
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3. Thetheory of quantum mechanicshas revolutionized our understanding ofthe nature of matter and energy.
量子力学理论已经彻底改变了我们对物质和能量本质的理解。