My advisor suggested economics and accounting, but I am not really sure.

我的导师建议我学经济和会计，但我还真不能确定（学哪个）。

youdao

Yet, as I thought about Juan's question, I was not sure how much more we could really rule out.

然而，当我思考胡安的问题时，我不确定我们还能排除多少可能性。

youdao

I was still not sure what competition really meant.

我仍然不确定竞争到底意味着什么。

youdao

"Celebrating with our family." "Presents!" "I usually get presents that say Santa Claus on them but I'm not really sure if they're from him."

VOA: special.2009.12.21

In other words, only if we really are sure that the historicist act of reading is effective and works, if I know the meaning of a text. Well, fine.

换言之，要是我们确定,阅读这个历史主义行为是有效的，有用的，如果我知道文本的意思，那么，很好。

耶鲁公开课 - 文学理论导论课程节选

But I'm not sure that you can really make that assumption based on something that someone creates

但我不确定你真的能基于某人创作的某些作品来做那样的推断，

印象深刻的展示会 - SpeakingMax英语口语达人

Mine came on during our opening match against the Royal XV but I am not really sure how.

BBC: Martyn Williams column

"I am really not sure what they have agreed to, " Chairman Archer said.

CNN: The Devil Is Always In The Details

"I am not really sure that it was a very good idea to bring her to Germany, " he says now.

BBC: Marwa's story: 10 years since the bomb fell