We are not sure yet whether we'll go or not.

去不去，我们还不能肯定。

《新英汉大辞典》

I'm not sure yet what's the best way.

我心里还没个准章程。

《新英汉大辞典》

Jun: I'm not sure yet.

小君：我还不确定。

youdao

Yet he himself was not sure what powers he had in many situations.

VOA: special.2009.02.09

The first step is divide them in half. All right? I'm not sure how to mark it here, remember I need to come back there. I'm not yet done. What do I do?

我不能确定如何,在这里进行标记,记住我会回这里进行讲解,我还没做完呢？

麻省理工公开课 - 计算机科学及编程导论课程节选

So my walk is, it's not confident and I'm not sure if I'm strong in my step yet.

所以我的走姿不是特别自信，担心步伐会不稳。

I wonder if 实战 - SpeakingMax英语口语达人

The main controller does have some subtle vibration (not DualShock or Wiimote level, but present), but we're not sure yet about the subcontroller.

ENGADGET: PlayStation Move first hands-on (update: video!)

Whether this is brilliant or idiotic, we're not sure yet.

ENGADGET: Video: Spider Camera Holster is a bit idiotic, possibly brilliant

I'm not sure yet what my schedule is going to be, but I'm very pleased that we're going to have an excellent U.S. pavilion at the Expo, and I understand that we expect as many as 70 million visitors here.

WHITEHOUSE: President Obama Holds Town Hall with Chinese Youth