我们有两只眼睛。
Why do we have two eyes, two ears and only one mouth?
为什么我们有两只眼睛,两只耳朵但只有一张嘴?
It's common knowledge that humans and other animals are able to visually judge depth because we have two eyes and the brain compares the images from each.
大家都知道人类和某些动物可以通过视觉来判断深度,因为我们有两只眼睛,大脑可以比较来自双眼的图像。
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