名词
中文翻译：光盘
同义词：
['CD', 'DVD', 'ROM']
例句：
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1. The CD-R is a digital storage medium that can store music and video files.
CD-R是一种数字存储介质，可以存储音乐和视频文件。
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2. This CD-R contains all the information about the new software update.
这张CD-R包含了关于新软件更新的所有信息。
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3. I bought a CD-R to backup my important documents before they were lost in the flood.
我买了一张CD-R来备份我的重要文档，以防它们在洪水中丢失。