{"info":{"title":{"content":"pdf怎么添加水印？四种为PDF添加水印的方法介绍！","en":"How to add watermark to PDF?4 ways to add watermark to PDF!"},"description":{"content":"pdf怎么添加水印？PDF文件作为一种广泛使用的文件格式，确实能够有效地保护我们的文档内容，但在某些情况下，它也可能会面...","en":"As a widely used file format, PDF file can indeed effectively protect the content of our documents, but in some cases, it may also be faceted."}},"items":[]}
