1.Would you please simplify the question?
您能把这个问题说得简单些吗?
2. Would you please say it in other words?
您能用别的话来表达您的意思吗?
3.Would you please speak a little bit louder?I can not hear you clearly.
您说话声音能大一点好吗?我听不清楚。
4. May I call you back half an hour later?
我半小时之后打给你好吗?
5.May I have your phone number and recall you?
把您的号码给我,待会我打过去好吗?
Tip:如果可以赢得时间,你应该马上赶回去,摊开资料写出一个提纲,从容应答。如果对方不同意推迟时间,你应该马上找个安静的地方坐下来开始回答。