【讲解版本】地道口语SHOW-电话中听不懂老外说什么，这样表达好了

打电话遇到困难时
Please speak a little more slowly.
Would you slow down, please? 
I can't hear you very well.
I can barely hear you.
I'm having trouble hearing you. 
We have a bad connection.
This is a really bad line.
Could you speak up, please?
Please speak a little louder.
The lines are crossed. 　　
I'm sorry to have kept you waiting.
I'm sorry for the delay. 
You gave me the wrong number