每个包含它所表示的视频的更多信息，包括类别、标题、描述、发布日期、作者和持续时间。
Each contains further information on the video it represents, including the category, title, description, publication date, author, and duration.
但是对图片和视频的直接搜索(人们描述它们时所使用的词语)比对文本形式的搜索困难得多。
But direct searching of pictures or videos (as opposed to the words that people attach to describe them) is much harder than indexing and searching text.
描述基于网络的应用程序(IP音频和IP视频)的效果。
Describe the impact of applications (Voice Over IP and Video Over IP) on a network.
应用推荐