I'm afraid I can't be certain about that until next week.

恐怕要等到下星期我才能确定。

youdao

We cannot predict with certainty what the future will bring, but we can be certain about the issues that will define our times.

我们不能肯定地预测到未来是怎样的，但是我们可以肯定哪些问题将会确定我们的时代。

youdao

As it is virtually impossible to be certain about the ingredients of some products we have introduced a 'potentially toxic' category.

因为事实上，不可能确定某些我们所引入的“具有潜在毒性”种类产品的成分。

youdao

The Georgian spokesman says he cannot be 100 percent certain about Russia's involvement,but notes that an investigation of specific involvement of Russian special services is underway.

VOA: standard.2009.05.05

If there is atmosphere in the passage I'm about to quote from Macbeth, it must be atmosphere of a certain kind and there for a certain reason.

如果下面这篇《麦克白》里的选段有所谓的“气氛“,那这种气氛一定因为某种原因以某种形式存在着。

耶鲁公开课 - 文学理论导论课程节选

That is to say, there's a certain set of views I hold about the issues that we'll be discussing.

那就是说，我持某一个观点,关于我们要讨论的问题。

耶鲁公开课 - 死亡课程节选

Remember when we could look ahead to a new year, lay out a long-term marketing strategy and be certain about the blueprint?

FORBES: The Two Best Ways To Keep Your Footing In The Changing Marketing Landscape

It's another to be certain and be right, or to be certain and be moving in the right direction, or be certain about a principle and then learn new facts and take those new facts and put them to use in order to change and get your policy right.

NPR: Transcript of Presidential Debate

You have to be as careful about certain retirement savings moves as you are about capital gains.

FORBES: Paying for College: Aid Formulas and AGI