life·time /ˈlaɪfˌtaɪm/
一生,終生(a.)一生的,終生的
lifetime
壽命
lifetime
壽命
Life·time n. The time that life continues.
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lifetime
n : the period during which something is functional (as between
birth and death); "the battery had a short life"; "he
lived a long and happy life" [syn: life, lifespan]