Clerk: Good morning. What can I do for you?
Steven: Good morning. I want to post this letter. Can you tell me what the postage is?
Clerk: I must weigh it. Do you want to send it by ordinary or registered mail?
Steven: I want this letter registered. There is something valuable inside.
Clerk: In that case, you'd better have it registered.
Steven: I think so. Would you mind telling me the postage now?
Clerk: Seven dollars and fifty cents in all.
Steven： Here is ten dollars.
Clerk: OK. Here are your receipt and your change.
Steven: Thank you. Goodbye.
Clerk: Bye.

职员：早上好。我能为您做点什么？
史蒂文：早上好。我想寄这封信，你能告诉我邮资需要多少吗？
职员：我必须称一下。您是要寄普通信还是挂号信？
史蒂文：我想寄挂号信，里面有很重要的东西。
职员：既然那样，您最好寄挂号信。
史蒂文：我也这么认为。你现在能告知一下邮资吗？
职员：一共7美元50美分。
史蒂文：给你10美元。
职员：好的。这是您的收据和零钱。
史蒂文：谢谢你，再见。
职员：再见。