duplex paper

例句：

1. 1. This office uses a duplex printer for its document processing needs.
   这个办公室使用一台复式打印机来处理文档需求。
2. 2. The duplex printing technology allows for high-quality color reproduction.
   复式打印技术允许高质量彩色复制。
3. 3. Duplex printing is an efficient way to save paper and reduce environmental impact.
   复式打印是一种高效节省纸张并减少环境影响的方式。