I'm not sure I could do that!

我不知道我能否做到这一点！

youdao

I'm not sure I could handle it!

我不知道我是否能处理好它。

youdao

Jim: I'm not sure I could do that one!

吉姆：我不确定我能否做到！

youdao

I'm not sure if the Yale Library has this or not, but if they don't you could ask the librarian to get it.

我不太确定耶鲁的图书馆是否有这本书,但是如果他们没有,你们可以要求图书管理员购置

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

.. I guess, unfortunately, it is for... there needs to be a number put somewhere, like, I'm not sure what that number would be, but I do agree that there could possibly be a number put on the human life.

我觉得，不幸的是。,有时确实需要标价，不过我不确定具体数字，但我确实认同,人的生命也许可以被标价。

耶鲁公开课 - 公正课程节选

So I think there was -- I'm not entirely sure what I meant by that, but I could have meant that she generally would be able to hear conversations, even if she couldn't see them.

CNN: C. Summary

Besides, when they interview him, even if they could slice him up rhetorically into itty-bitty pieces -- and I'm not sure they could -- why would they want to?

CNN: Why Limbaugh is gushing over Marco Rubio

"After 1994, " Wyden says, "I think a lot of Americans looked at the federal government and said, 'I'm not sure those folks could run a two-car parade, let alone resolve what to do about one-seventh of the American economy, our health system, " he said.

NPR: One Senator's Solution for Health Care Expansion