Jeff deceived me once already—I won't give him a second chance.

杰夫已骗过我一次，我不会再给他机会。

《牛津词典》

You cheated me once, but you will never catch me again.

你们骗了我一次，但你们再也不会骗到我了。

youdao

You saved me once, and what is given is always returned.

你救过我一次，付出总会得到回报的。

youdao

Let me tell you about a person I once knew who liked to play card games for money.

VOA: special.2009.10.11

As one of my favorite historians warned me once, "Don't leave out the politics."

我最喜欢的一位历史学家曾如此警告过我,"不要忽略了政治"

耶鲁公开课 - 美国内战与重建课程节选

And this point-- that it is culture rather than acoustics-- was brought home to me once in a discussion with a student here at Yale who said to me, "Yeah, but over there at the Slifka Center, we Jews have lots of happy melodies and they are all in minor--what you would call minor."

还有一点,大小调是文化差异,而非声学,有个耶鲁的学生上我家里去讨论,他对我说,哈,就在这个斯利夫卡中心,我们犹太人有很多快乐的旋律,都是小调,就是你说的那种小调

耶鲁公开课 - 聆听音乐课程节选

And let me once again thank President Barack Obama for the cooperation in this area.

WHITEHOUSE: Signing of New START Nuclear Arms Treaty with Russia

He said to me once, 'I want you to find him and pull him out.

NPR: Sheriff Says No Immediate Cause Of Death For Ex-QB

You can hear me now but you won't be able to hear me once the game starts!'

CNN: Lone soccer fan wins army of admirers