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英语解释

life span

汉语翻译

【化】 使用期限; 有效期限

life span英语解释

名词 life span:

  1. the period during which something is functional (as between birth and death)
    同义词:life, lifetime, life-time, lifespan

life span例句

  1. Modern medicine has increased man's life span.
    现代医学延长了人的寿命。
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