Digital library is a new concept and a new technology. The types of data include multimedia information such as text, voice, image and video, etc.

数字图书馆是一种新概念和新技术，数据类型包括文本、语音、图像、视频等多媒体信息。

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A person communicating from the desk may use either a video telephone or PC equipped for multimedia server is used to switch the voice, video, data and image to all sites.

人们可以使用可视电话、或者装备了PC的多媒体设备通过切换声音、电视图象、数据和图象到各地点进行通信。

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Project Drawing has practical and applied nature, and its content is abstract. Multimedia teaching could better display by video, animation, color and voice to show the course visibly and vividly.

《工程制图》课程的理论性和实践性较强，且内容比较抽象，多媒体教学可以集视频、动画、色彩、声音于一体，形象、动态地展示课程内容。

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These electronic devices provide control and security across the edges of two communications networks that carry voice, video and multimedia sessions.

FORBES: Pleasant Surprises