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。

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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。

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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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When in Live View or recording video, contrast detect AF quickly acquires, and can even track focus through the frame.

ENGADGET: Nikon D5200 to reach US photographers in late January for $900

By contrast, video gamblers get to that stage in just over two years.

CNN: They Call It Video Crack

However, in contrast to most video sharing sites, Zudeo offers high definition videos.

BBC: Zudeo users will be able to download copies of Red Dwarf