actions and devices that are used by the owners of software or information to prevent people from accessing or copying it from the internet without permission 数字版权管理(指软件或信息拥有者为防止互联网盗版行为所采用的措施或装置) DRM-protected music files 受数字版权管理保护的音乐文件 The publisher has a DRM system that restricts use of downloaded software. 出版商有一个限制使用下载软件的数字版权管理系统。