I'm not very sure about my decision.

我对自己的决定不是很有把握。

youdao

I'm not very sure. I'll give you a call later.

我不能肯定。过些天我会打电话给你。

youdao

Dad's not very happy about it, but I'm sure he'll enjoy it when we're there.

爸爸对此不太高兴，但我相信等我们去了，他会喜欢的。

youdao

This was very big in an ad campaign at least last year, I'm not sure if it still is, with the little butterfly.

它的广告宣传做得很大，至少在去年是这样的，我不确定它现在还是不是，它这里有一个小蝴蝶。

麻省理工公开课 - 化学原理课程节选

I'm not really sure. I guess it's definitely very different from mine

我不知道。但我觉得她的生活和我非常不同，

介绍好朋友 - SpeakingMax英语口语达人

66 I'm sure it would be very amusing if I fell, but I'd rather not.

但我可不想，我们用13除以。

麻省理工公开课 - 化学原理课程节选

"Mr Abramovich is a controversial figure and I'm not sure he's very popular with the common people, " said Igor Schveitzer, a football correspondent with Radio Liberty.

BBC: Roman's Moscow homecoming

"I am not a doctor, nor am I a medical historian, but these injuries are very difficult to recover from after one surgery, and I'm not sure what the history is of recovery from a second more or less identical surgery, " general manager Sandy Alderson said on a conference call.

WSJ: Santana likely to miss season with torn shoulder

Personally, I'm not sure "let's discuss" would be a very fruitful search term, but "big trouble" and "just between us" would definitely be on my list.

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