Your brain does the work of intelligently putting together the sharpest parts from each eye's view, but the two eyes see slightly different things, and that makes it harder to judge distances binocularly.

你的大脑会智能地将每只眼睛的视野中最清晰的部分放在一起， 但两只眼睛看到的东西略有不同，这使得双眼判断距离变得更加困难。