名词
中文翻译：表现力差额
同义词：
['margin of performance', 'margin of achievement']
例句：
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1. The company's performance margin is a key metric for investors to evaluate its profitability.
公司的绩效边际是投资者评估其盈利能力的关键指标。
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2.The new software has improved the company's performance margin significantly.
新软件显著提高了公司的绩效边际。
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3. To increase sales, the company needs to improve its performance margin.
为了增加销售额，公司需要提高其绩效边际。