听不懂时的重复用语

Pardon?
I beg your pardon?

What did you said just now ?

Wait ! I can't follow you ,can you just slow down ?

Could you say it again, please?

Would you mind repeating that? I didn't quite catch on.

Beg pardon, I don't catch the Chairman's remark.

 I can not understand you, say it again, please.