名词
中文翻译：利润率
同义词：
['return oninvestment', 'return on capital employed', 'earningsratio']
例句：
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1. The company's profit rate has increased significantly sincethe new management took over.
自从新管理层上任以来，公司的利润率显著提高。
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2. Tocalculate the profit rate, we need todivide the total revenue by the total expenses.
要计算利润率，我们需要将总收入除以总支出。
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3. The profit rate is akey indicator of a company's financialhealth.
利润率是衡量公司财务状况的关键指标。