名词
中文翻译：成本
同义词：
['price', 'expense', 'expenditure']
例句：
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1. The cost of the new car is $50,000.
这辆新车的成本是5万美元。
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2. The cost of living in this city is very high.
这个城市的生活成本非常高。
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3. The company's decision to invest in new technology will have a significant cost impact.
公司决定投资新技术将产生重大的成本影响。