I don't know just exactly how old his child is, but certainly not older than twenty.

他的孩子究竟多大我不清楚，反正不超过20岁。

《新英汉大辞典》

Because that's not an option but certainly it could.

但这不是一个选择，但它当然可以是。

youdao

But certainly with the ir swe at, and even the occasional tear.

当然这其中也有这些父母的汗水，甚至偶尔还夹杂着他们的泪水。

youdao

"We are seeing progress. It's probably not as fast as we would like it to be but certainly the direction of travel is positive.

VOA: standard.2009.10.01

We're continuing to evolve not just as a human rights concept but certainly as nations and our ethical understandings of what is appropriate.

我们在发展，不单单是人权的观念,我们的国家，道德观念,都在向前发展。

普林斯顿公开课 - 人性课程节选

but certainly it's a place that has been represented in film.

但那个地方肯定在电影里出现过。

电影里的中央车站 - SpeakingMax英语口语达人

But certainly we do know that debt is a major issue in this country.

NPR: Women Of Color Lag Behind In Wealth

But certainly a dark thrill ran through onlookers as Andrew Fastow took the stand.

FORBES: Fastow Tells Of Loss-Hiding Enron 'Raptors'

Then by fall 2009 it was clear that normalcy was slowly but certainly coming back.

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