来自《耶鲁大学开放课程：心理学导论 第18集》

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  one of the most severe forms of depression. And as I said, the DSM sets up these
  抑郁症中最严重的形式之一 我前面提到过 DSM中包括了
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  relatively observable criteria and how many you have to have
  相对可以观察到的判断标准 症状符合的数量
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  and what absolutely has to be present in order to get the diagnosis.
  为了进行诊断 这些症状必须是目前的
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  So, the first criterion in the DSM for major depression
  DSM中重性抑郁症的第一个标准是
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  is that the individual has to either show sadness
  个体在日常生活中出现悲伤
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  or a diminished interest or pleasure in their usual activities,
  兴趣减弱或快乐减少
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  which is referred to as anhedonia. So, you have to have one
  也就是快感缺失的症状 要满足第一条标准
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  or the other of these to sort of pass the first criterion.
  你得有上述症状中的某一种
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  So, you might say that you feel sad and blue
  你可能觉得很悲伤 忧郁
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  and just--or actually say you feel depressed.
  或者感到抑郁
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  Some people feel those feelings very strongly.
  有些人这种感受很强烈
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  Other people don't really feel so sad or blue,
  有些人并不是那么悲伤或忧郁