The thing that is missing in this new vision of television, however, is the set itself.
不过，这种新型电视缺少的是机子本身。
It is marked by a mutation in a gene known as RPE65 which results in a missing enzyme that leads to degradation of the retina and the disruption of vision processing in the brain.
这种病的特点是，一段名为RPE65的基因发生变异，导致缺失，进而引起视网膜退化，大脑视觉处理中断。
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