名词
中文翻译：边际比率
同义词：
['marginal', 'marginality ratio']
例句：
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1.The company's profit margin has decreased significantly in the past year.
该公司过去一年的利润率显著下降。
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2. The economist calculated a marginal ratio to determine the optimal level of taxation.
这位经济学家计算了一个边际比率来确定最优税率水平。
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3. The market research firm used this marginal ratio to forecast consumer behavior.
市场研究公司利用这个边际比率来预测消费者行为。