I am not sure the correctness of this point.

我不确定这个观点的正确性。

youdao

I am not precisely sure how long I stayed frozen in that position, but the next thing I recall is the apparition vanishing before my eyes.

我不能精准地确定我在那个位置上呆了多久，但我记得的下一件事就是那个幽灵在我眼前消失了。

youdao

Without him around, I am not sure how I could do a senior thesis on The Canterbury Tales books.

如果没有他在身边，我不确定自己是否能完成这篇关于坎特伯雷故事集的毕业论文。

youdao

But now, I am not so sure that the wine is really Amontillado."

VOA: special.2009.02.07

I don't know about that. I am not so sure." But then, we realized that like when we walk out that door, it's the whole world again. So you get sucked up by your group, by your sort of identity.

我不知道，不是很确定，然后呢，我们就意识到走出那个大门，又是一个完整的世界，所以你就会,被你的团体，你的身份所束缚。

普林斯顿公开课 - 人性课程节选

I am not sure... Everyone was gushing about all the... I think it's modern arts.

我不是很确定……每个人都在滔滔不绝的讲……我认为是现代艺术吧。

喜欢毕加索吗？ - SpeakingMax英语口语达人

It is a great phrase, but I am not sure the change has much to do with class.

BBC: Republicans upbeat in a gloomy US economy

When you have email, chat, Twitter, Facebook messages, video messages, SnapChat and more, I am not sure the media label works anymore.

FORBES: An Interview with Dan Rosensweig of Chegg

Otherwise, I am not sure the marriage would work as being a die-hard supporter, which includes traveling the country, takes up a lot of time.

CNN: November 13, 2012 -- Updated 1234 GMT (2034 HKT)