星级典句:
第一句: What's the postage on this parcel to Hong Kong, please?
请问寄往香港的这个包裹需要多少邮资？
A: What's the postage on this parcel to Hong Kong, please?
请问寄往香港的这个包裹需要多少邮资？
B: It's $4 by airmail.
航空邮寄的话是4美元。

第二句: Can you tell me the postage, please?
请把邮资告诉我可以吗？
A: Good morning. I'd like to send two postcards to Japan. Can you tell me the postage, please?
早上好，我想寄两张明信片到日本，请把邮资告诉我可以吗？
B: One dollar for each postcard.
一张明信片一美元。

其他表达法:
How much does it cost?
邮资多少钱？
What is the surcharge on this express letter, please?
请问这封快信的附加费是多少？