像这样的机会一生也许只会遇到一次。

An opportunity like this comes once in a lifetime.

《牛津词典》

直到有一天，简已经卧床一年，眼看来日无多，约翰想到最后的机会即将悄然而去，便最后一次问简，为什么一生都带着黄丝带。

It was not until Jane was on her death bed a year later that Johnny, seeing his last chance slip away, asked Jane one final time about the yellow ribbon she wore around her neck.

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这绝对是个一生一次的机会。

This is definitely a once-in-a-lifetime opportunity.

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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