So, for Piaget, the first stage is the sensorimotor stage or the sensorimotor period.

皮亚杰认为,第一个阶段,是感知运动阶段,或者说,感知运动期

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In other words, we said that in intellectual history, first you get this movement of concern about the distance between the perceiver and the perceived, a concern that gives rise to skepticism about whether we can know things as they really are.

换言之，我们曾说过在思想史上，首先你要知道,关注感知者和被感知者之间距离的运动，这种关注会让我们怀疑,自己是否弄清楚了事物的本来面目。

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The child starts off grasping the world only in a physical way, in a sensorimotor way, but when he gets to the preoperational period, the capacity to represent the world, to have the world inside your head, comes into being.

开始的时候,儿童只能通过生理的方式,通过感知运动的方式,来认识世界,但是当儿童进入了前运算阶段,他们便逐渐拥有了表征事物,在头脑中构建世界的能力

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