柯林斯詞典lifespan /?la?fsp?n/ (also life span) (lifespans) 1. N-VAR The lifespan of a person, animal, or plant is the period of time for which they live or are normally expected to live. (人或動植物的) 壽命 A 15-year lifespan is not uncommon for a dog. 15年的壽命對狗來說并非罕見。2. N-COUNT The lifespan of a product, organization, or idea is the period of time for which it is expected to work properly or to last. (產(chǎn)品、組織或想法的) 使用期限 Most boilers have a lifespan of 15 to 20 years. 大部分鍋爐的使用期限是15到20年。 返回 lifespan劍橋詞典the length of time for which a person , animal , or thing exists 壽命；可持續(xù)年限，有效期 The average human lifespan in the developed countries has increased over the last hundred years . 發(fā)達(dá)國家的人均壽命在過去的100年間延長了。 The project's lifespan is estimated at about five years . 預(yù)計這項工程為期5年左右。 返回 lifespan