The next stage is the preoperational stage.

下一个阶段是前运算阶段

耶鲁公开课 - 心理学导论课程节选

One of us did his Pre-World War II, one of us did During World War II,

有人是负责二战前的阶段，有人是负责二战期间的，

要做好角色分担 - SpeakingMax英语口语达人

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

耶鲁公开课 - 心理学导论课程节选