在搜索中的无效词等，包括中文，英文两个文档。基本包含了见的所有无效词-Invalid words in the search, including the English and Chinese documents. See all basically contains invalid word

北大天网项目负责人，国内信息搜索权威李晓明著，对搜索引擎原理进行了细致的讲述-North Skynet project manager, internal information search authority Li Xiaoming, and the principle of the search engine on a detailed