名词
中文翻译：运营成本
同义词：
['operational cost', 'operating expense']
例句：
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1. The company's operating costhas increased significantly due to the new technology.
由于新技术，公司的运营成本显著增加。
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2. Toreduce operating costs, the company is consideringswitching to a more energy-efficient machine.
为了减少运营成本，公司正在考虑更换一台更节能的机器。
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3. The operatingcost of this project isestimated to be $500,000.
这个项目的运营成本估计为50万美元。