大部分雷射和喷墨印表机必须在页面边缘留下未列印的区域，以免碳粉沾到印表机移动纸张的元件。
Most laser and inkjet printers must leave an unprinted area around the edges of a page to prevent toner from getting on the parts of the printer that move the sheets.
大部分雷射和喷墨印表机必须在页面边缘留下未列印的区域，以免碳粉沾到印表机移动纸张的元件。
Most laser and inkjet printers must leave an unprinted area around the edges of a page to prevent toner from getting on the parts of the printer that move the sheets.
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