求翻译：从生理学的角度来说，人的眼睛对黑白灰的敏感程度远比对其他色彩的敏感程度高，因为黑白灰具有优先唤起视觉神经感知的特性，特别是黑与白。是什么意思？

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From the perspective of the physiology, in the eyes of the sensitivity of the gray and black far more than other colors with a high degree of sensitivity, because the gray and black have priority in the optic nerve-aware of the Summon features, particularly those that are black and white.

From the physiology angle, human's eye is far higher than to the black lime sensitive degree to other color sensitive degree, because the black lime has first arouses the visual nerve sensation the characteristic, is specially black and is white.

From a physiological perspective, the human eye sensitivity to white and grey color sensitive than other high level, because black and white ash has the right of evoking characteristics of visual perception, especially in black and white.

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