The new chip will be made from a piece of silicon about the size of a postage stamp.

这种新的芯片将由大约邮票大小的一块硅片制成。

Can I buy a postage stamp here?

我可以在这里买张邮票吗？

Some minor knowledge of postage stamp!

邮票的一些小知识！

Give me a 20-cent postage stamp, please.

请给我一张二角的邮票。

He also invented the adhesive postage stamp.

他还发明了粘性邮票。