Or, just print the PDF on demand, then delete the file immediately.
或者，仅仅在需要的时候打印成PDF文件，然后立即删除。
If you receive it, in any circumstances do not open it and delete it immediately.
如果你收到它，在任何环境下都不要打开它，且立即删除它。
If you receive it, in any circumstances do not open it and delete it immediately.
如果你收到它，在任何环境下都不要打开它，且立即删除它。
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