Sorry? / Pardon me? / Excuse me?

　　您说什么?

　　I'm sorry, I didn't hear/catch you.

　　不好意思，我没听懂您的意思.

　　I didn't understand. Could you repeat that?

　　没听懂，能再讲一遍吗?

　　Could you speak up a little?

　　您大声点好吗?

　　I didn't understand what you are trying to say.

　　我不明白您要说的。

　　Could you explain with some examples?

　　您能举例解释一下吗?

　　Can you say again, please?

　　您能再重复一次吗?

　　Come again, please?

　　再说一次好吗?

　　I’m sorry?

　　请再说一次。