A: Hello? This is Jimmy in 309.
B: Hi, Jimmy. This is Nicole. What's going on?
A: Maybe you can get me out of a small jam.
B: Well, I can certainly try.
A: Somehow, I managed to lose my mailbox key.
B: Believe me, losing a mailbox key is a lot better than losing your car keys.
A: I've got a duplicate somewhere, but I haven't been able to find it either.
B: If you absolutely can't wait, come over here and borrow a key.
A: No, I doubt that there's anything important in my mailbox, if there's anything at all.
B: Well, if there's no emergency, I can make you two more keys on Wednesday.
A: Not a problem. All my fan mail can wait till then.
B: Okay, see you Wednesday. Have $4 for me, and I'll give you a receipt.
n. 邮筒,邮箱