他记得查理曾经在一次聚会上唱歌。

He remembered Charlie once sang at a party.

youdao

它扁平的形状意味着土卫八曾经旋转得非常快，完成一次自转需要16个小时。

Its flattened shape implies that Iapetus once spun very quickly, completing a rotation in 16 hours.

youdao

我曾经看过这部电影一次。

I have ever watched this film once.

youdao

There has been a long discussion about what people owe each other and how okay it is to try to make money.

曾经有一次很长的讨论,是关于自己欠别人多少,而自己应该赚多少才合适

耶鲁公开课 - 金融市场课程节选

But there's extra, again, insult to injury, when the person's got to remember that he used to be something extraordinary, a ruler.

但当这人不得不记着，他曾经位高权重，是统治者的时候,这又一次，是在伤口上撒盐。

耶鲁公开课 - 死亡课程节选

And I hope, as you are reading, you notice that chapter opening where once again Dean appears at the door when Sal shows up, and he's totally naked.I hope you noticed that. It's the third time that we see that so there is an eroticism between them.

我也希望，你们在阅读时注意到那一章,就是曾经萨尔去找迪安时，迪安又一次是光着身子，开的门，我希望你们注意到这一点，这是第三次,我们看到这一幕，所以他们对彼此有着性欲。

耶鲁公开课 - 1945年后的美国小说课程节选