名词
中文翻译：活动边际
同义词：
['effective margin', 'active edge', 'effective edge']
例句：
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1. The company's active margin is a key indicator of its financial health.
公司的活动边际是其财务状况健康的关键指标。
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2. In economics, the active margin measures the profitability of a business.
在经济学中，活动边际衡量企业的盈利能力。
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3. The active margin in this sector has increased significantly over the past year.
这个部门的活动边际在过去一年内显著增加。