These printers work by selectively heating regions of heat-sensitive paper that is infused with a chemical that changes color when it comes in contact with the heated print head.

这种打印机工作方式是选择性地加热热敏纸区域，热敏纸含有化学成分，当它接触到热的打印头时会改变颜色。

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Sensitive paper data should be kept in a locked, limited-access area.

敏感的文件数据要锁起来，闲人免进。

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The newspaper said that for much of last October, the State Department sent couriers around the world with sensitive information on paper and limited access to the computers in question.

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These services can prevent unnecessary exposure of paper documents that contain sensitive information.

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"Paper might be the most consumer sensitive of all because it's used in packaging - and packaging is used for everything, " said Minter, who has just finished writing a book about the globalization of the waste and recycling industry.

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