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人的眼睛,一左一右,长在脑袋正前方。但你有没有想过这是为什么呢?为什么我们的两只眼睛不能一只长在脑门前,另一只长在后脑勺呢?那样不是能够同时看到前面和后面的东西了?
People’s eyes, from left to right, long in front of his head. But have you ever wondered why this is happening? Why can not our two eyes grow in front of the forehead and the other one in the back of the head? Is it not possible to see both the front and the back at the same time?