或者过期失效也可以，不用太严格，只需要实施起来比较简单就可以了。谢谢大家。
This topic created in 2542 days ago, the information mentioned may be changed or developed.
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phy25 Jun 25, 2019 via Android  1
不知道容不容易，但是
https://support.office.com/en-us/article/information-rights-management-in-office-c7a70797-6b1e-493f-acf7-92a39b85e30c Information Rights Management in Office 或者直接用 Adobe PDF 的 DRM。 |
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