Two important notions orbit around the simple idea of constructed knowledge. The first is that learners construct new understandings using what they already know.
有两种观点紧紧围绕知识建构，第一个是学习者使用已知的知识建构对新事物的理解。
The simple idea of distributing information has so many layers of complexity that the whole problem can seem hopelessly enigmatic.
分发数据这个简单的思想竟然会引出这么些复杂层次，而所有这些问题看起来都像是根本不可能解开的谜。
The simple idea of distributing information has so many layers of complexity that the whole problem can seem hopelessly enigmatic.
分发数据这个简单的思想竟然会引出这么些复杂层次，而所有这些问题看起来都像是根本不可能解开的谜。
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