Once in a life time... I would like to travel around the world.

在一生里一定要有一次的是…我想要环游全世界。

youdao

'This usually only happens once in a life time. Isn't this reason enough to lavish and celebrate?'

这事（结婚）通常是一辈子仅此一次。难道这还不够理由让我们为之不做保留，好好地庆祝一番吗？

youdao

You should therefore learn to enjoy the process after all this will be a once in a life time experience.

因此你应该学会享受这个过程，毕竟这会成为人生中仅有的一次经历。

youdao

As she told a friend once: "In a life that stopped guessing, you and I should not feel at home."

VOA: special.2010.07.18

Andy Falconer made the "once in a life time discovery" when out searching with fellow treasure hunter Rob Farrer.

BBC: Bishop's seal found in field on display at museum

Such brilliant colors are a sign of life in what was once thought to be a barren environment.

FORBES: Magazine Article

With the Celtic Tiger well and truly buried, emigration is once again a looming presence in Irish life.

BBC: Irish immigrants on the decline in England and Wales