life-expectancy
life-expectancy — 名詞
1. how many years people or animals can expect to live, usually counted as an avera
預期壽命
人或動物預計能活的平均年數
how many years people or animals can expect to live, usually counted as an average for a whole country or group.
Doctors in the town hoped better water would raise the local life expectancy.
鎮上的醫生希望更好的水質能提高當地的預期壽命。
collocation: raise the life expectancy
Élise learned that life expectancy in her grandmother's village had risen over fifty years.
Élise 得知，她外婆所在村莊的預期壽命在五十年間提高了。
pattern: life expectancy in + place
Smoking can shorten a person's life expectancy by several years.
吸菸可能使一個人的預期壽命縮短好幾年。
collocation: shorten life expectancy by + time
The vet told Tendai that a cat's life expectancy is about fifteen years.
獸醫告訴 Tendai，貓的預期壽命大約是十五年。
pattern: an animal's life expectancy is + number of years
Kevin's report compares life expectancy for men and women in three countries.
Kevin 的報告比較了三個國家男性與女性的預期壽命。
- raise life expectancy
- shorten life expectancy
- average life expectancy
- life expectancy in + place
文法句型
life expectancy in + place
life expectancy of + person or animal
用法筆記
Can be countable or uncountable, and often appears without an article, as in 'life expectancy in Europe'. Sense 2 applies the same idea to objects instead of living things.
常見錯誤
2. how long a machine, product, or building is expected to keep working or lasting.
使用壽命
物品預計能使用多久
how long a machine, product, or building is expected to keep working or lasting.
The seller says this phone battery has a life expectancy of three years.
賣家說這顆手機電池的使用壽命有三年。
pattern: a life expectancy of + period of time
Emre checked the life expectancy of the washing machine before buying it.
買洗衣機之前，Emre 先查了它的使用壽命。
Regular cleaning can extend the life expectancy of a car engine.
定期清潔可以延長汽車引擎的使用壽命。
collocation: extend the life expectancy of + object
Engineers estimate that the old bridge has a life expectancy of ten more years.
工程師估計這座舊橋還有十年的使用壽命。
A cheap pair of shoes often has a short life expectancy.
一雙便宜的鞋子通常使用壽命很短。
collocation: short / long life expectancy
- extend the life expectancy of
- short life expectancy
- expected life expectancy of + years
- lifespan
general word for how long something lasts or works
- service life
a more technical term for how long equipment can be used
文法句型
life expectancy of + period of time
用法筆記
Distinguish from sense 1: the subject here is an object, machine, or structure, not a person or animal.
同根字
- expect動詞A2
- expectation名詞B2
常見搭配
常用片語
- raise life expectancy
- shorten life expectancy
- extend life expectancy
- average life expectancy
介系詞搭配
- life expectancy of
- life expectancy in
- life expectancy for