本研究试图提出一套因果解释的架构，分析自主与依赖的形成过程。
This essay tries to present a causal explanation for the different political exchange types.
尽管现在医学还不能解释其因果关系，但事实不可否认。
Science still can't explain the link, but the facts are clear.
尽管现在医学还不能解释其因果关系，但事实不可否认。
Science still can't explain the link, but the facts are clear.
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