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。
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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。
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I can't make a decision right now. 我现在无法作出决定。
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I just need some time to think it over. 我需要时间考虑考虑。
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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。
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There are certain points that I'll have to consider very carefully. 有些问题我得慎重考虑。
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That may well be so. I'm not sure. 很可能是这样的。我不敢确定。
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It all depends. 这得看情况而定。