来自《耶鲁大学开放课程：心理学导论 第3集 第3集》

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  We don't know what--It's like the workings
  这就像是我们无法察觉
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  of our kidneys or our stomachs.
  肾和胃的活动一样
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  You can't introspect and find them.
  你无法通过自省而感受到它们的存在
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  Rather, they do their work without conscious knowledge.
  相反 它们的活动都是无意识的
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  Now, Freud developed this.
  这就是弗洛伊德提出的理论
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  This is the Freudian theory in broad outline.
  这就是弗洛伊德理论的大体框架
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  He extended it and developed it into a theory
  他在此基础上扩展并提出了
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  of psychosexual development.
  性心理发展理论
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  And so, Freud's theory is,
  所以 正如之前所说
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  as I said before, a theory of everyday life,
  弗洛伊德的理论不仅解释了日常生活
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  of decisions, of errors, of falling in love,
  决策 失误以及恋爱等现象
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  but it's also a theory of child development.
  还解释了儿童的发展