播客是发布录制的数据音频文件的数据提要(feed)，可自动下载和复制到用户的便携式媒体设备上。
A podcast is a data feed that distributes recorded digital audio files that are automatically downloaded and copied to a user's portable media device.
传统的搜索引擎出无适开于自动上载长媒体信做并开类保留，所以无必要研讨针闭于长媒体的搜索引擎和数据库。
Traditional search engine is not appropriate to do that, so it is necessary for the development of multimedia search engines and databases.
应用推荐