您說什么?
I'm sorry, I didn't hear/catch you.
不好意思,我沒聽懂您的意思.
I didn't understand. Could you repeat that?
沒聽懂,能再講一遍嗎?
Could you speak up a little?
您大聲點好嗎?
I didn't understand what you are trying to say.
我不明白您要說的。
Could you explain with some examples?
您能舉例解釋一下嗎?
Can you say again, please?
您能再重復一次嗎?
Come again, please?
再說一次好嗎?
I’m sorry?
請再說一次。