在第一篇文章中，我的目的是得到可打印报表。
In the first article, my goal was to obtain printable reports.
由于可打印数据的敏感特征，需要进行某些限制。
Certain restrictions need to be put in place due to the sensitive nature of the data that could be printed.
当是一个可打印字符时，就有替换方法。
When it is a printing character, then there is such a method.
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