名词
中文翻译：项目成本
同义词：
['cost of an item', 'cost of a thing']
例句：
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1.The cost of the new software package is $500.
新软件包的成本是500美元。
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2. The cost of living in this city is very high.
在这个城市生活的成本非常高。
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3. The cost of production has increased due to rising oil prices.
由于油价上涨，生产成本已经增加。