首次发行的永久邮票为41美分每张，但是却没有面额，无论以后怎么涨价，都可以用来寄一封信。
The first forever stamps are selling for 41 cents apiece, but they won't have a price printed on them and they will remain valid for sending a letter regardless of any future increases.
你有没有想过寄一封信给未来的你或你的朋友？
Have you ever dreamed about sending a letter to yourself or your friends in the future?
你有没有想过寄一封信给未来的你或你的朋友？
Have you ever dreamed about sending a letter to yourself or your friends in the future?
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