He hummed and hawed, giving no definite reply.

他闪烁其词，不做肯定答复。

If any queries, ask the reader to give you a definite reply.

如有疑问，请读者给予明确答复。

I should scope out his real goal before I give him a definite reply.

我得先琢磨一下他的真正意图，才能给他一个明确的答复。

I should like to think about your suggestion before I give a definite reply.

我想先考虑一下你的建议，然后给你一个明确的答复。

We expected that you will give us a definite reply at your earliest convenience.

期盼贵方能尽早给我方一个明确的答复。

Please look up the matter and give us your definite reply without further delay.

请重视此事并立即给予我方一个确切的答复。

We are sorry not able to give you a definite reply in respect of the above matter.

就上述事情，我方很难给予你方肯定的答复。

We are very sorry not to be able to give you a definite reply in respect of the above matter.

就上述事情，我方歉难给予肯定的答复。

Please wait a few minutes; I must put my thoughts together before I give you a definite reply.

请等几分钟；我必须考虑出个头绪来才能给你明确的答复。

I'm sorry to hear that. After studying your survey report carefully we'll give you a definite reply as soon as possible.

很抱歉。在我们仔细研究你们的检验报告后，我们会尽快给你们一个明确的答复。