even for human predators, what the person is wearing and if he's carrying a gun. 甚至包括人类狩猎者的穿着，以及是否带着枪。

　　Great apes, like chimps and gorillas, are great communicators, too. 类人猿，比如黑猩猩和大猩猩，也很善于交流。

　　Some have even learned a modified sign language. 甚至有一些学会了改进后的手语。

　　A chimpanzee named Washoe demonstrated discreteness 一只名叫华秀的黑猩猩，通过将不同手势转换成原始的词组，

　　by combining multiple signs into original phrases, like, "Please open. Hurry." 比如“快打开门”，展现了其分离性。

　　Coco, a female gorilla who understands more than 1000 signs, Coco，一只能明白1000多种手势

　　and around 2000 words of spoken English referred to a beloved kitten that had died. 和大约2000个英语口语词汇的雌猩猩，提到了一只刚死去的可爱小花猫。

　　In doing so, she displayed displacement, 她的这种表现显示出了时空性，

　　though it's worth noting that the apes in both of these examples were using a human communication system, 但值得注意的是，类人猿在这两个案例中用的是人类的交流体系，

　　not one that appeared naturally in the wild. 并不是任何天然形成的特性。

　　There are many other examples of sophisticated animal communication, 动物们还有很多复杂交流的案例，

　　such as in dolphins, which use whistles to identify age, location, names, and gender. 比如海豚通过吹口哨来辨别年龄、位置、姓名和性别。

　　They can also understand some grammar in a gestural language researchers use to communicate with them. 它们也懂一些研究人员用来与之交流的语法。

　　However, grammar is not seen in the dolphin's natural communication. 然而，在海豚的自然交流中是不存在语法的。

　　While these communication systems may have some of the qualities of language we've identified, none display all four. 虽然这些交流体系会体现出一些我们所知的语言特性，但并不包含全部四个。

　　Even Washoe and Coco's impressive abilities are still outpaced by the language skills of most three-year-old humans. 即便华秀和Coco拥有一流的语言能力，也不如大多数3岁孩子的语言技巧。

　　And animals' topics of conversation are usually limited. 动物们对话的内容通常都很有限。

　　Bees talk about food, prairie dogs talk about predators, and crabs talk about themselves. 蜜蜂谈论食物，土拨鼠讨论捕食者，螃蟹讨论它们自己。

　　Human language stands alone due to the powerful combination of grammar and productivity, 人类的语言就显得独树一帜了，这源于对语法和创造性的强大组合能力

　　on top of discreteness and displacement. 和领先的分离性和时空性。

　　The human brain can take a finite number of elements and create an infinite number of messages. 人类的大脑能够利用有限的元素创造无限量的信息。

　　We can craft and understand complex sentences, as well as words that have never been spoken before. 我们能够加工和理解复杂的句式，以及我们从没说过的词语。

　　We can use language to communicate about an endless range of subjects,  我们能运用语言交流无限量的主题，

　　talk about imaginary things, and even lie. 讨论想象的事物，甚至说谎。

　　Research continues to reveal more and more about animal communication. 研究还在不断揭露更多的关于动物交流的信息。

　　It may turn out that human language and animal communication aren't entirely different but exist on a continuum. 或许能证明人类的语言和动物的交流并非完全不同，而是存在于同一个交集区。

　　After all, we are all animals. 毕竟，我们都是动物。