名词短语
中文翻译：Unknown
同义词：
['marginal utility theory', 'marginal efficiency theory']
例句：
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1. The theory of marginal productivity explains how changes in inputs affect outputs.
边际生产力理论解释了输入变化如何影响产出。
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2. This theory of marginal productivity has been widely accepted by economists.
这一边际生产力理论已被经济学家广泛接受。
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3. The theory of marginal productivity is crucial for understanding the economic behavior of individuals and firms.
边际生产力理论对于理解个人和企业的经济活动至关重要。