Most of the crowd were cheering for the underdog to win just this one time.

人群中大多数人在为那位处于劣势者赢得一次比赛而加油鼓劲。

《柯林斯英汉双解大词典》

To hammer home this point, if I could, we have time for one awkward demonstration.

为了强调这一点，如果可以的话，我们还有时间做一个不太好的示范。

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The United States had sent an astronaut of its own into space for the first time in nineteen sixty-one.

VOA: special.2009.07.08

and just try for one time and see what you get.

去试一次，然后看你能得到什么。

知道普雷特公司吗？ - SpeakingMax英语口语达人

So what it might be would be a phrase that has struck one as if for the first time.

因此这种支点也许是,某人刚刚想到的一个短语。

普林斯顿公开课 - 人性课程节选

Microsoft will continue selling software the traditional way, for a one-time fee for one Windows computer.

NPR: Review: Microsoft Office Pricey, But Good Value

But Transportation Secretary Norman Mineta said much of current spending is for one-time projects.

CNN: Democrats: Bush budget 'dead before arrival'

Below is a list of common names for one-time items concealed within operating line items.

FORBES: What You Don't Know About Reported Earnings Can Cost You Dearly