The videodisc is made of liquid crystal polymers, about the size of a phonograph record.
光是液晶聚合物制，小和一个唱片差不多。
CD outsells vinyl for the first time.
光销售量首次超过塑胶唱片。
Do you want to overburn your disc?
22你想闭合刻录你光？
A DVD music system plays discs that look like CDs, but blows them out of the water.
DVD 音乐系统播放光外表像CD，可是比CD效果要好得多。
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