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.
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.
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