求翻译：广播电视在人们日常生活中扮演着重要的角色，是人们生活、娱乐不可缺少的工具。信息技术的迅猛发展和人们对电视娱乐要求的不断提高，使互动电视收到越来越多的重视。数字电视的出现是广播电视史上最重大的事件之一，它不仅大大提高了电视音频和视频的质量，还改变了传统的收视模式，能够提供电视网站、视频点播、远程教育、信息服务等多项增值业务。是什么意思？

Radio and television play an important role in people's daily lives, people live, play an indispensable tool. The rapid development of information technology and people to the increasing requirements for TV entertainment, interactive television received more and more attention. Advent of digital television is one of the most significant event in the history of radio and television, which not only greatly improve the quality of TV audio and video, also changed the traditional TV model that provides television websites, VOD, distance education, information services and many other value added service.