来自《耶鲁大学开放课程：心理学导论 第2集 第2集》

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  and so in some extent might help alleviate depression.
  因此可以在某种程度上缓解抑郁症的症状
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  Parkinson's disease is a disease
  帕金森症会损害运动控制
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  involving destruction of motor control
  丧失对运动的控制
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  and loss of motor control, difficulty moving.
  变得行动困难
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  And one factor in Parkinson's
  引起帕金森症的一个病因
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  is too little of a neurotransmitter known as dopamine.
  便是严重缺乏一种叫做多巴胺的神经递质
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  The drug L-DOPA increases the supply of dopamine
  左旋多巴这种药可以增加多巴胺的分泌量
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  and so there is something to alleviate,
  所以这种药物
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  at least temporarily,
  至少可以暂时性地缓解
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  the symptoms of Parkinson's.
  帕金森症的症状
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  So, you have neurons
  所以 你有很多的神经元
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  and they're clustered together
  它们聚集在一起