If you wish to reprint this article in a printed form, in newsletters, magazines or any other publications, you will need to contact the author for permission.
若想要将此文发表在印刷的简报、杂志或其他刊物上，请联系本文作者。
Letterpress involves a direct contact between the type and other items being printed and paper.
凸版印刷是一种字模或其他母体与纸张直接接触的印刷工艺。
Please have it printed under its official letterhead with contact information.
请以带有责公司联系方式抬头的信纸打印。
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