NBI changes the white light normally emitted by the colonoscope to a bluish light, providing a narrower wavelength and enhancing visual contrast of the surface structure of the colon.

窄带成像技术将结肠镜常规发射的白光改变为蓝光，以此提供一个较窄的波长，加强结肠表面结构的视觉对比度。

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The visual contrast was qualitatively graded as 0, 1+. 2+and 3+.

视觉造影效果以0，1+，2+和3+的分级方法进行定性分析。

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The bright red lip and the white skin in the Lady will give viewers a sharp visual contrast.

《仕女》中鲜明的红唇与雪白肌肤成了强烈对比。

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The pace and intensity of visual contrast between the different states can be customized to suit personal liking.

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The juxtaposition was pithy, and there was a catchy visual contrast between the heap of colored fabric and naked white plaster.

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That something different would not only have grounded users of previous versions of Windows in an intuitive way, but it also would have provided memorable visual contrast.

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