The facial-feedback hypothesis argues, however, that the causal relationship between emotions and facial expressions can also work in the opposite direction.

然而，面部反馈假说认为，情绪和面部表情之间的因果关系可能反过来也是成立的。

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However, there is insufficient evidence at present to support the hypothesis that depression has a direct causal relationship with subsequent dementia.

不过，目前尚无足够的证据支持抑郁与随后的痴呆有直接因果关系的假设。

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The Causal Principle is a hypothesis while causality shows the order of nature and is the core of the order and necessity is the prerequisite for science as well as the basis of the causal concept.

普遍的因果性原理是一种设定，因果性是自然秩序的表现方式，必然性是这种秩序的核心，它是科学存在的前提，也是因果观念合理性的基础。

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One way of thinking about the metaphor of city and soul together is to think of it as a particular kind of causal hypothesis, about the formation of both individual character and political institutions.

思考城市与灵魂结合的方法,是将其想象成,是一种特别类型的,因果假说，关于形塑,个人性格与政治制度。

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One can easily overcomplicated this disease or oversimplify it (in the case of the amyloid hypothesis), but there is often one causal factor (bacteria, virus, peroxynitrite, etc.) that explains the great majority of diseases and once you identify that factor and how to neutralize it, then you can successfully treat the disease.

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