lifetime

一生、一輩子、終身

She spent her whole lifetime helping children in poor villages.

她一輩子都在幫助貧窮村落裡的孩子。

使用壽命、年限

The battery has a lifetime of about five years.

這顆電池的使用壽命大約是五年。

很久、漫長的時間口語

Waiting for the results felt like a lifetime.

等結果的那段時間感覺像過了一輩子那麼久。

難得的機會、千載難逢常用於 of a lifetime

Studying abroad for a year was the chance of a lifetime.

出國留學一年是千載難逢的機會。

終身的、一輩子的

The product comes with a lifetime warranty against defects.

這項產品提供瑕疵終身保固。