Print on both sides of the paper for internal documents.
使用纸张正反两面打印公司内部文件。
This paper describes in detail a system for the management of mathematical documents.
本文对数学文献管理系统进行了较为详细的描述。
They also come into contact with bond, a high-grade paper used for important documents.
他们也会接触到铜版纸，一种高级的重要文件用纸。
They also come into contact with bond, a high-grade paper used for important documents.
他们也会接触到铜版纸，一种高级的重要文件用纸。
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