I'm not sure if this approach is a good thing or a bad thing at the moment, but it's what is implemented.

我不是很确定，对于现在的情况来说，这个方法是好是坏，但至少它生效了，不是么？

youdao

A garage sale-a fist fight ended up here at the emergency room, I'm not sure we can count on this kind of thing happening all the time.

开始是平卖会，然后打架，最后在急症室，我不知道这种意外事件还能有几次。

youdao

It's easy to think they might go largely unnoticed but I'm sure this is not the case. I just do my own thing and try not to bother anybody.

很容易就能想到他们可能会悄无声息地行进但是我不确定这不是那种情况，我只是做了我自己的事，并且尽量不打扰别人。

youdao

if we do introduce a third possibility-- I'm not sure this is the right thing.

如果确实加入这一种可能-,我不确定这是对的。

耶鲁公开课 - 死亡课程节选

Honestly, I'm not even sure if this thing is going to work for my return trip.

ENGADGET: IRL: Rosetta Stone, PocketWizard and the TomTom Via 1530

I'm confident we can win this thing, but it's not a sure thing.

WHITEHOUSE: Remarks by the President at a Campaign Event -- Tampa, FL

And the one thing I'm sure of is that this is not Japan in the 1990s.

FORBES: Round Table