The video processor directs each electrode to transmit signals representing an object's contours, brightness and contrast, which pulse along optic neurons into the brain.
视频处理器引导每个电极传输出代表一个物体的轮廓、亮度和对比度的信号，信号会跳动着由光神经细胞传输到大脑。
By contrast, the podcast component of iTunes is growing quite dramatically, providing a means for many small and large audio and video distributors to share or sell their wares on the Web.
iTunes的播客部分却在以戏剧性的速度成长，因为它为许多大小语音或者视频发行人提供了在网上分享或者销售产品的方法。
Added: New video Tone Mapping options replacing the old Dynamic Contrast.
补充：新的视频色调映射选项取代旧的动态对比度。
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