如果你还没有听到打电话的人说了什么，更礼貌的说法是：“对不起。你能再说一遍吗？”而不是简单地说：“什么？”

If you have not heard what a caller said, it is much more polite to say "I'm sorry. Could you say this again, please?" than to simply say "What?"

youdao

对不起，不知道为什么，我有点迷糊了。你能再说一遍吗？

I am sorry. I'm just zoned out for some reason. Can you say that again?

youdao

第二种情况是也许你听不清我说的话。这时你可以说：“对不起，你能大点儿声吗？”或是：“请再说一遍好吗？”

Teacher:The second is, maybe you can't hear me clearly. In this case, you could say "Excuse me; can you speak up, please?" or "I beg you pardon?"

youdao

第二种情况是也许你听不清我说的话。这时你可以说：“对不起，你能大点儿声吗？”或是：“请再说一遍好吗？”

Teacher:The second is, maybe you can't hear me clearly. In this case, you could say "Excuse me; can you speak up, please?" or "I beg you pardon?"

youdao