名词中文翻译
中文翻译：有用生命
同义词：
['lifespan', 'useful lifespan']
例句：
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1.The elderly need a longer useful lifespan to maintain their health.
老年人需要更长的有益寿命来保持健康。
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2. The company's new product has a useful lifespan of five years.
该公司的新产品有五年的有用寿命。
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3. The scientist's research has extended the useful lifespan of the technology.
科学家的研究延长了这项技术的有用寿命。