在商务谈判中，有些时候不能给对方一个确切的答案，但是又不能一口否定，那么要使谈判有回旋的余地就得回避明确地答复。

That may well be so. I'm not sure.

很可能是这样的。我不敢确定。

It all depends.

这得看情况而定。

I can't make a decision right now.

我现在无法作出决定。

I just need some time to think it over.

我需要时间考虑考虑。

We are still a little unsure about the prospect， though.

不过，我们对于前景还是有点不能确定。

There are certain points that I'll have to consider very carefully.

有些问题我得慎重考虑。

I'm afraid I can't give you a definite reply now.

恐怕我现在无法给你一个明确的答复。