今天，电影和音乐行业都有自身的评级制度，视频游戏行业也是如此。
Today the film and music industries have voluntary rating systems, and so does the video game industry.
最好的例子，这个制度是潘朵拉的音乐推荐服务。
The best example of this system is the Pandora music recommendation service.
技术性预防方面的技术性建设主要有：运用RFID技术，完善安检制度，引入功能音乐等等。
Technical constructions of technical prevention are: the use of RFID technology, perfect security system, and the introduction of functional music.
应用推荐