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life span

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漢語翻譯

【化】 使用期限; 有效期限

英文解釋:

名詞 life span:

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

例句:

  1. Modern medicine has increased man's life span.
    現代醫學延長了人的壽命。

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