1、Can I buy a postage stamp here?
我可以在這里買張郵票嗎？

2、That is if you put a postage stamp on upside down, you'll go to prison.
也就是說，如果你把郵票倒過來貼，你就會(huì)進(jìn)監(jiān)獄。

3、Can I buy a postage stamp here
我可以在這里買張郵票嗎？

4、A fifty cent postage stamp was put on the heavy letter.
那封超重的信上貼了一張五十美分的郵票。

5、That is, if you put a postage stamp on upside down, you'll go to prison.
那就是，如果你把一張郵票上下貼反的話，你就會(huì)被關(guān)進(jìn)牢里。

6、a postage stamp in mint condition
一枚嶄新的郵票