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》

KELLY: I'm not sure yet.

凯莉：我还没确定。

youdao

TONY: I'm not sure yet.

托尼：我还不太清楚。

youdao

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

These would have been inscriptions either on pottery, which the earliest ones are,or on stone, but otherwise I'm sure there was writing on perishable material-wooden plaques, probably not yet paper, but these would have been destroyed.

有些是刻在陶器上的铭文,最早期的时候,是刻在石头上的,但另外,我能肯定,有些是写在易腐蚀的材质,比如木头,或者瓷片上的,当时应该还没有出现纸,但是这些都被毁坏了

耶鲁公开课 - 古希腊历史简介课程节选

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

So I'm anti Santorum, but I'm not sure I'm completely with Casey yet.

NPR: For Santorum, Race Momentum Swings

We're not there yet (and I'm not sure why we'd want to get there).

FORBES: 'The Road Ahead' Is Here