这条信息是用不褪色的墨水写的。

The message was written in indelible ink.

《柯林斯英汉双解大词典》

其中一张上写着一信息，那墨水和笔迹跟丝苔妮收到的一模一样。

On one was a penned message, the ink and writing the same as Stephanie had received.

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哈佛大学研究小组分析了秘密信息。根据拉弗蒂的调查结果摘要显示，没有哪个16世纪的墨水和“那个字条上的”一样。

A research team at Harvard analyzed the secret message, and, according to Lafferty's summary of its findings, it had never seen "sixteenth-century ink act as it does on that particular document."

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