One thing I know for certain: Ira had it wrong.

有一件事我很清楚：Ira搞错了。

youdao

It is the one thing I know I want to do for the rest of my life.

这就是我知道我余生想做的一件事。

youdao

"The one thing I know the Banks are concerned about is their risk capital," he said.

他说：“我所知道的银行关心的一件事就是他们的风险资金。”

youdao

"One thing I've learned over life is that you don't really know what pain is or joy is until you experience the other."

VOA: standard.2010.03.25

Because I stand up here and I talk about the one or more than one thing I know about and so it's easy to infer that I must know a lot but in fact by the time this semester ends I will have tell you told you everything I know.

因为我站在讲台上,我给你们讲我知道的知识,所以你们很轻易就推断出我一定懂很多,但其实到了学期末，我要告诉你们,我会的都已经教给你们了。

耶鲁公开课 - 心理学导论课程节选

It's one thing to plug in all the numbers and say, "I know Newton's laws and I know how they work."

我们平时只是把数字代进公式,然后说,"我懂牛顿定律,也知道怎么使用"

耶鲁公开课 - 基础物理课程节选

But the one thing I know about community organizers is that they know how to organize communities.

CNN: Commentary: GOP shouldn't knock community organizers

In the meantime, there's one thing I know I have to do, no matter what I do.

CNN: Joe, make way for Hillary

But one thing I know for sure -- since he took office, Barack has been fighting for us.

WHITEHOUSE: Remarks by the First Lady at a Campaign Event