Having found the cause, the doctors were able to treat the disease and cure it.

病因找到了，医生们就可以治疗并治好它。

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Yet the cause and cure for the mental sickness are still unknown.

但是精神疾病的病因和疗法还是不得而知。

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Yet the cause and cure for the mental sickness are still unknown.

但是精神疾病的病因和疗法还是不得而知。

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