Uncertain about an answer
A: Ms. McPherson? I’m afraid I’m not sure on that. Is there a number where you can be reached?
B: Yes, 532-4121. How soon can you get back to me?
A: I should be able to get this information for you by this afternoon. I’ll call you as soon as I know.
B: All right. Please leave a message with my secretary if I’m not in.

回答无把握的事情
A：麦克费尔森女士，这个问题恐怕我没把握。能给我个电话号码和您联系吗？
B：行，532-4121。得多长时间你能打电话给我？
A：我应该今天下午就能查到这一信息。我一得到消息就给您打电话。
B：好的，如果我没在请给我的秘书留个口信。