They first used a wooden carving of letters or drawings which could be dipped in ink and stamped on a page - rather like we use a stamp pad.

他们首先用可以上墨的木刻字或木刻图画印于纸上，就像我们现在用的印章。

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Then we use the stamp to print them on, for instance, a sheet of plastic.

然后，我们就用这图章将硅电池印制在其他物体上，比如印制在一张塑料膜上。

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If not, a spammer could mint just one high bit-value stamp and use it everywhere.

如果不是这样，垃圾邮件制造者就可以只生成一个高比特值的戳记并到处去使用它。

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For example, more than a dozen states use federal food stamp subsidies to give a dollar home heating credit for people who do not have a utility bill.

CNN: STORY HIGHLIGHTS

For Augusta, welcoming Ms. Rometty to the club should be a no-brainer, a rubber stamp, a tap-in, to use the golfer's term for an easy putt.

WSJ: Masters 2012: A Tradition That Should Change. IBM's Virginia Rometty and Augusta National Golf Club

The Whole Grains Council developed a black and yellow stamp that food manufacturers can use to tout products that contain at least half a serving or more of whole grain.

CNN: Don't be afraid of the dark -- whole grains explained