And his discoveries that-- they did them in different ways at different ages led to the emergence of the Stage Theory.

他发现,儿童在不同的年龄拥有不同的行为方式,他根据这一发现提出了阶段理论

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So, it's a cool finding of that stage, suggesting a limitation in how you deal and make sense of the world.

这是该阶段的一个重要发现,表明儿童在考虑和理解世界的方式上,存在着局限性

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If you looked at the antibodies that were present in the blood, for example, you would find that most of those antibodies are IgM during this initial period of antibody concentration rise.

如果你现在观察血液中存在的抗体,举个例子,在初次免疫的抗体浓度上升阶段,你将会发现大部分的抗体都是IgM

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Another significant finding Piaget had about this phase of development concerns what's called "conservation."

皮亚杰在该发展阶段中的另一个重大发现,就是"守恒"

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