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BNC: 2369 COCA: 15281

lifespan

Word family
life·span /ˈlaɪfspæn/ ●○○ noun [countableC]  
LIFEthe average length of time that someone will live or that something will continue to work 〔人的〕平均寿命;〔物的〕使用寿命 lifetime
 Men have a shorter lifespan than women.
男性的平均寿命比女性短。
a lifespan of 5 days/10 years etc
 A TV set has an average lifespan of 11 years.
电视机的平均使用寿命为11年。
Examples from the Corpus
From Longman Business Dictionary
lifespanlife·span /ˈlaɪfspæn/ noun [countableC]
the period of time during which something will continue to be useful
The new water distribution system could save hundreds of millions of pounds over its 150-yearlifespan.
life·span noun
Chinese
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