Please stick this stamp to the envelope before you mail the letter.

在你寄出这封信之前，请把这张邮票贴在信封上。

youdao

Clerk: The letter is a little bit heavier. Please affix another stamp.

营业员：这信有点超重，请再贴一张邮票。

youdao

Eventually, instead of printing from these directly, he employed them to stamp out intermediate dies which were then used as moulds to mass produce letter blocks made of a lead alloy.

渐渐地，他不再直接使用这些小钢块，而是利用它们压制出中等大小的模具，用这些模具可以批量生产出铅合金的字母块。

youdao

"This letter had a large green stamp on it.

VOA: special.2009.12.26

The only way to send a text message was to write a letter and slap a stamp on it.

FORBES: Transforming Telecom

The cost of a second-class stamp for a regular letter increased from 36p to 50p.

BBC: Price cap for parcels confirmed by mail regulator Ofcom

Instead of instant communications that tend to make people anxious and distracted, you can write a letter and put a 45 cent stamp on it.

FORBES: The Real Story Behind Obama's Proposed Social Security 'Cuts'