once-in-a-lifetime

常见例句

I missed out on some once-in-a-lifetime trips. My fiancé went all over Europe in college and I am very jealous of her for it.
如果可以就去国外念书，我错过了许多次千载难逢的旅行机会，我未婚妻就曾在大学时游遍欧洲，对此我非常的妒忌。
But those that do consider it a once-in-a-lifetime opportunity for their children to experience the life of a princess, if only for a week.
但也有的家长觉得这是一次千载难逢的好机会，可以让自己的女儿体验一回当王妃的感觉，哪怕只有一周也好。
Study abroad if you can. I missed out on some once-in-a-lifetime trips. My fiancé went all over Europe in college and I am very jealous of her for it.
如果可以就去国外念书，我错过了许多次千载难逢的旅行机会，我未婚妻就曾在大学时游遍欧洲，对此我非常的妒忌。

For the fans,it will be a once-in-a-lifetime opportunity to join the celebrations and see the world's greatest football players compete at home in Africa.
And then other people are really excited because it's a once-in-a-lifetime opportunity
而另外一些人真的很兴奋，因为这是一个一生只有一次的机会，
正准备奥运会 - SpeakingMax英语口语达人
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