It's going to be a once-in-a-lifetime opportunity.

这将是一次极其重要的机会。

youdao

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

这绝对是个一生一次的机会。

youdao

Orcas rarely breach, so a perfect shot like this one is virtually a once-in-a-lifetime opportunity.

逆戟鲸几乎不跃出水面，所以这样一个完美的镜头抓住了那一个千载难逢的机会。

youdao

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.

VOA: standard.2010.02.10

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

Former Scottish Broadcasting Commission chairman Blair Jenkins earlier described the channel as a "once-in-a-lifetime opportunity".

BBC: Lack of TV network is bizarre, says culture minister

The whole nation has to get behind the legacy values here because this is a once-in-a-lifetime opportunity.

BBC: Olympic Games: Lord Coe made legacy ambassador

Stand back and watch the economic explosion when taxpayers and small business owners capitalize on a once-in-a-lifetime opportunity.

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