如果问题清楚，但是要思考一下的话，可以说
I think it's a little difficult for me now,but I will try to give the best answer to you.
如果是没听清楚问题，希望对方解释一下，可以说
The question maybe a little abstract,can you give me more imformations about it?
如果只是需要重复的话，尽量不要用Pardon?而是直接说
I'm awfully sorry that I didn't catch your words exactly,can you repeat it again?
内容全部来源于网络收集，如有侵权，请联系网站删除：QQ：24596024