当正确使用时，投影的确能为设计增加视觉深度和质感。
Shadows can really add visual depth and texture when used the right way.
暗条纹也是个绝佳之选，因为对比色会增加视觉深度。
Also, it would be best to stick with darker stripes, because contrasting colors add more depth.
人类获得视觉深度的途径主要有四种，但只有以双目方式才能获得统一的视觉深度观念。
There are four ways for human beings to have visual depth, but the binocular vision is the only way to have the punitive visual depth.
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