I'm just speaking off the cuff here—I haven't seen the results yet.

我只是在这里即兴说说而已，我还没看到结果呢。

I'm not good at speaking off the cuff.

我不擅长即席演讲。

Im not good at speaking off the cuff.

我不擅长即席演讲。

He is at his best when he speaks off the cuff.

在他即兴演讲的时候就是他状态最好的时候。

This isn't the kind of question that one can answer off the cuff.

这可不是那种可以随口回答的问题，我可以先不回答吗？