名词
中文翻译：理论体系
同义词：
['ideological system', 'theoretical framework', 'theoretical model']
例句：
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1. The development of the theoretical system is closely related to the progress of technology.
理论体系的发展和技术进步密切相关。
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2. The theoretical system proposed by the author provides a new perspective for understanding this phenomenon.
作者提出的理论体系为理解这一现象提供了新的视角。
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3. The theoretical system of economics has been greatly improved through the application of modern mathematical methods.
经济学的理论体系通过现代数学方法的应用得到了极大的提升。