呃……或许国会应该通过一项法律，只能双面复印。

Hmmm... maybe Congress should pass a law requiring double-sided copying.

youdao

打印机、复印机等办公设备时有卡纸现象发生，特别是在满足高速打印和双面复印等市场需求时，其送纸机构还产生严重的振动和噪声。

Office equipments, such as printers, copiers, are prone to problems of paper jam, especially in high speed print or two side copy, there are also serious vibration and noise.

youdao

惠普不仅能够打印复印浏览图片，同时也可以不通过电脑而通过触摸屏来查看和编辑图片，无线网络连接功能使其可以打印其它设备中的图片，包括iphone中的图片，双面打印可以同样减少纸张消耗。

Wireless connectivity lets you print from other devices, including iPhones. Two-sided printing also reduces paper wastage.

youdao