In addition, long-term smoking, eye trauma, infection, inflammation and other factors, would harm the delicate macular organizations, impede vision center.

此外，长期吸烟、眼部外伤、感染、炎症等因素，也会伤害黄斑部的精致组织，妨碍中心视力。

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So when blood flow does not reach the eye, vision fails, and darkness ensues from the periphery to the center.

所以当血液流动不到眼睛时，视力就会衰退，黑暗就会从神经末梢蔓延到中心。

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Our vision is, 'how do we virtualize the entire data center?'

我们的视点是，‘如何虚拟化整个数据中心？’

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Now,with the vision centers in place, doctors are treating an average of 5,000 patients per center per year.

VOA: standard.2010.05.25

Instead,he traveled only three kilometers by local bus to this vision center in his village.

VOA: standard.2010.05.25

Chittu Pillai is a 65-year-old homemaker brought to the vision center from a nearby village by a neighbor.

FORBES: Companies, People, Ideas

Results showed, neurons in a vision center of the brain became active in response to one expected licking interval or the other, but not both.

MSN: Goggle-wearing rats show link between learning, rewards

Nerves from a part of the rat brain known as the basal forebrain are thought to secrete the chemical acetylcholine into the brain's main vision center, also called the primary visual cortex, reinforcing connections that were recently active.

MSN: Goggle-wearing rats show link between learning, rewards