名词中文翻译1
中文翻译：Unknown
同义词：
['span of life', 'duration of life', 'lifespan']
例句：
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1. The scientist has dedicated his lifetime to research.
这位科学家毕生致力于研究。
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2. The company's lifecycle model is widely used in industry.
该公司的生命周期模型在业界被广泛使用。
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3. The project has a lifecycle of five years.
该项目有五年的生命周期。