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

将阁下之有效信用卡双面复印并于复印件上签名后传真给我们，复印件必须清晰可见信用卡持有者的姓名、卡号、有效期等。

Make a photo copy of your credit card on both sides, the copy must be clear to read and enclose the card holder's name, card No., expiry date and your signature, and then submit it to us.

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