Piaget had a rich theoretical framework, pulling together all sorts of observations in different ways, wrote many, many books and articles and articulated his theory very richly.

通过将各种观察结果,以不同的方式组合在一起,皮亚杰的理论内容变得十分丰富,他写了大量的书籍和论文,丰富了他的理论

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At the same time, however, there are limitations in Piaget's theory.

然而,与此同时,皮亚杰的理论也有其局限之处

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And this is the Piagetian theory in very brief form.

这就是皮亚杰理论的大体内容

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