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高级搜索指令filetype：<br><br>filetype用于搜索特定文件格式。这个可以说是我最常用的一个搜索指令，它可以让你快速查找到PDF Word Excel等等文件，就比如说我们要在网上去下载一些资料的时候，但是有的网站他只能查看不能下载，这个指令就可以帮你解决问题，Google和百度都支持filetype:指令。<br>比如搜索“关键词 filetype:pdf”返回的就是包含这个关键词的所有PDF文件<br>—<br>英语小课堂<br><br>The advanced search operator “filetype:” is used to search for specific file formats. This is one of my most commonly used search operators, as it helps you quickly find PDF, Word, Excel, and other types of files. For example, if you’re looking to download materials online but some websites only allow you to view them, this operator can help you solve that issue. Both Google and Baidu support the “filetype:” operator.<br><br>For example, searching for “keyword filetype:pdf” will return all PDF files containing that keyword.