lifetime /ˈlaɪftaɪm/ ●the chance, etc. of a ˈlifetimea wonderful opportunity, etc. that you are not likely to get again终身难得的机遇；千载难逢的机会◆This is your chance to win the trip of a lifetime! 这是你赢得旅游机会的大好时机！●a living ˈlegend ( a ˌlegend in your own ˈlifetime) a person who has become famous while still alive在世的传奇人物◆Her 30-year study of chimpanzees made her a living legend.对黑猩猩长达 30 年的研究使她成为当代的传奇人物。