形容词
中文翻译：成本效益的
同义词：
['cost-efficient', 'cost-effective', 'economical', 'efficient']
例句：
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1. The new product is cost-effective and will save us a lot of money.
新产品既经济又实惠，将为我们节省大量资金。
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2. The company's decision to invest in research and development was cost-effective and saved them a lot of time.
该公司决定投资研发的决定是物有所值的，并为他们节省了大量时间。
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3. The new policy is designed to be cost-effective and promote sustainable development.
新政策旨在实现成本效益，促进可持续发展。