将它同原始模型M1组装到一起。
这是读者们的原始模型吗?
可惜的是,正是这种原始模型,而非它们的尖端衍生品,通常对世界政策和实践有最大的影响。
Unfortunately, it is these primitive models, rather than their sophisticated descendants, that often exert the most influence over the world of policy and practice.
I am going to put up the most primitive version.
首先说一下波尔模型最原始的版本。
Is that the primary model of readership?
这是读者们的原始模型吗?
So you start with your basic model, then you add in, you enrich the model, and you see if the results change, and that'll help you explain why you're getting different results in different settings.
你们从最原始的模型开始,加入约束条件来丰富这个模型,然后检验结果是否有变,这能帮助我们解释,为什么在不同条件下结果是不同的
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