Optical discs are made of polycarbonate that comes in large bags.

制造光盘的原料是这些大包里的聚碳酸酯颗粒。

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Will we have access to optical discs that can be played by laser?

我们可以拥有由激光播放的光盘吗？

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Optical fiber communication and optical discs are the important fields in optoelectronics.

光纤通信和光盘技术是光电子技术中的重要领域。

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Apple has built a way around the last, best thing optical discs were good for.

FORBES: Apple Just Killed The Optical Drive

Consumer devices use common digital storage technology such as flash memory, hard disk drives or optical discs.

FORBES: Will You Remember Me When I am Gone: The Persistent Danger of Data Loss

So for a whole plethora of reasons, it makes a lot of sense to get rid of optical discs in desktops and notebooks.

CNN: Apple's Schiller: 'Old technologies are holding us back'