English Dictionary

lifetime

/ˈlaɪftaɪm/

noun

The duration of the life of someone or something. / (informal, hyperbolic) A long period of time.

She has dedicated her lifetime to helping others.

意味（1）

The duration of the life of someone or something.

a project that will take many human lifetimes to complete

意味（2）

(informal, hyperbolic) A long period of time.

I've been waiting a lifetime for a train.