Question

lifetime n.一生，寿命;有生之年;存在期，有效期;na.终生;终身保障;[核]寿命; pl:lifetimes~

Accepted Answer

英[ˈlaɪftaɪm]  美[ˈlaɪfˌtaɪm] N-COUNT一生；终生A lifetime is the length of time that someone is alive.例：During my lifetime I haven't got around to much travelling.我一生中没怎么去旅行过。例：...a trust fund to be administered throughout his wife's lifetime.为他妻子终生管理的信托基金N-SING（事物的）存在期，使用期The lifetime of a particular thing is the period of time that it lasts.例：...the lifetime of a parliament.议会的届期例：...a satellite's  lifetime.卫星的使用期PHRASE终生难遇的；千载难逢的If you describe something as the chance or experience of a lifetime, you are emphasizing that it is the best or most important chance or experience that you are ever likely to have.例：This could be not just the trip of a lifetime but the experience of a lifetime.这可能不仅是一趟终生难遇的旅行，也将是一次终生难遇的体验。

单词	lifetime
音标	英[ˈlaɪftaɪm] 美[ˈlaɪfˌtaɪm]
解释	n.一生，寿命;有生之年;存在期，有效期;na.终生;终身保障;[核]寿命;
例句	N-COUNT 一生；终生 A lifetime is the length of time that someone is alive. 例：During my lifetime I haven't got around to much travelling.我一生中没怎么去旅行过。例：...a trust fund to be administered throughout his wife's lifetime.为他妻子终生管理的信托基金 N-SING （事物的）存在期，使用期 The lifetime of a particular thing is the period of time that it lasts. 例：...the lifetime of a parliament.议会的届期例：...a satellite's lifetime.卫星的使用期 PHRASE 终生难遇的；千载难逢的 If you describe something as the chance or experience of a lifetime, you are emphasizing that it is the best or most important chance or experience that you are ever likely to have. 例：This could be not just the trip of a lifetime but the experience of a lifetime.这可能不仅是一趟终生难遇的旅行，也将是一次终生难遇的体验。
变形	pl:lifetimes~

Lifetime Experience Time 例：...A Chance 英[ˈlaɪftaɪm 美[ˈlaɪfˌtaɪm N.一生，寿命;有生之年;存在期，有效期;Na.终生;终身保障;[核]寿命