He is denying the world of the philosophers, a world of objects beyond direct perception.
他否认哲学家的世界，一个由不能直接感知的物体构成的世界。
In this way you lose all initiative, all direct perception.
这样你就丧失了所有的主动性、所有直接的觉知。
Stereoscopic vision is the direct perception of distances of objects, using both eyes.
立体视觉是两眼对物体距离的直观感觉。
Humans have no direct perception of infrared rays unlike the rattlesnake which has receptors tuned into wavelengths longer than 0.7 micron.
与响尾蛇不同，人也不能直接感受到红外线。响尾蛇的感觉器可以感受波长超过0.7微米的光线。
Humans have no direct perception of infrared rays unlike the rattlesnake which has receptors tuned into wavelengths longer than 0.7 micron.
与响尾蛇不同，人也不能直接感受到红外线。响尾蛇的感觉器可以感受波长超过0.7微米的光线。
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