尽管引起脱发的原因各不相同，但最主要的原因却是一个我们无法控制的因素。

Despite all the different causes of hair loss, the leading cause is one that we can't do much about.

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在某些情况下，癫痫发作和癫痫有着相同的病因，如头部外伤或中风引起的脑部损伤。但更多的情况下，无法找到具体原因。

In some cases, seizures and epilepsy have an identifiable cause, such as head trauma or brain damage from a stroke. But more often, no specific cause can be found.

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相同的原因引起可见光的红移。

A red shift in visible radiation has the same cause.

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