Y: I'd like to send this to Chicago.

Y:我想把这封信寄到芝加哥去。

X: Air mail or surface mail?

X:航空还是水运呢?

Y: Air mail, please.

Y:航空吧。

X: Please put it on the scale there. Seventy-five cents.

X:请把信放在那边的称上。要0.75美元。

Y: Make it special delivery, please.

Y:请用限时寄送。

X: Oh, then it'll be one dollar twenty-five cents. Thank you.

X:哦，那要1.25美元。谢谢你。