life span
US /ˈlaɪfˌspæn/
UK /ˈlaɪfˌspæn/
名詞
壽命, 生命週期
the length of time for which a person, animal, or thing exists or functions
範例:
•
The average human life span has increased significantly over the past century.
在過去一個世紀裡，人類的平均壽命顯著增加。
•
Some insects have a very short life span.
有些昆蟲的壽命很短。