“千載難逢”，意思是一千年里也難碰到一次（occurring only once in a thousand years）。通常形容機(jī)會(huì)極其難得，非常罕見?！扒лd難逢的機(jī)會(huì)”可以翻譯為“chance of a lifetime”，表示“An extremely important and/or fortuitous opportunity, especially one that is not likely to ever present itself again”。

“千載難逢”也可以用英文俗語“once in a blue moon”來表示，當(dāng)我們說“something happens once in a blue moon”時(shí)，表示“it happens only very rarely”。

例句：

曾經(jīng)有一個(gè)千載難逢的機(jī)會(huì)在我面前，我卻把它浪費(fèi)掉了。
I had the chance of a lifetime, and I blew it.

這樣的機(jī)會(huì)對(duì)你來說真是千載難逢。
It's only once in a blue moon that you get an opportunity like that.