来自《耶鲁大学开放课程：心理学导论 第7集》

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  that has the properties that we discussed earlier,
  拥有我们之前所谈那些特性的东西
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  using English and ASL and Spanish and so on
  比如用英语 美国手语 西班牙语等
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  as our background,
  来表示我们所具有的背景
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  the answer's almost certainly "No."
  那么答案基本肯定是"不能"
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  Animal communication systems fall into sort of one of three categories.
  动物间交流的方式不外乎三种
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  Either there is a finite list of calls,
  有的动物使用一系列有限的叫声
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  so vervet monkeys, for instance,
  比如黑长尾猴
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  have a small list of calls to convey different warnings like
  用有限的几种叫声来表达不同的警报
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  "Attack from a snake" or "Attack from a leopard."
  如"有蛇来袭"或"有豹来袭"等
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  There is a continuous analog signal.
  还有一种连续的模拟信号
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  So, bee dance, for instance, works on this way.
  比如蜜蜂的舞蹈就使用了这种方式
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  Bee dance communicates the location of food sources
  蜜蜂的舞蹈传达了蜜源的地点