I'm sorry. I didn't get you.
对不起, 我没听懂。
Excuse me?
对不起, 我没听懂。
I beg your pardon?
我没听清楚, 请你再说一遍好吗?
Pardon?
我没听清楚, 请你再说一遍好吗?
I didn't follow you.
我没听清楚你说的话。
What was that?
你说什么?
Could you repeat it, please?
可以请你再说一遍吗?
Can you say that again?
可以再说一遍吗?
Could you slow down, please?
可以请你说慢一点吗?
Could you speak up a bit?
可以说大声点吗?