lifetime [ˈlaɪftaɪm]

以下由轻松背单词网站提供

n.一生，终身，寿命，使用期限

the period of time during which someone lives or something exists

He wrote many books during his lifetime. 他一生著作甚多。
During his lifetime his work was never published. 他的作品在他的有生之年从未出版过。