So many, in fact, that each individual language contains only a subset of potential sound units, or phonemes.

事实上，其种类之丰富以至于每种语言只含有一种潜在音位子集。

Any individual language will only use a few dozen, and the ones you don't use, you can't really hear.

任何一种单一语言只会使用其中几十个，而你不会使用的声音其实是听不到的。

This simplified example illustrates a major problem: it takes a lot of data from each individual language to establish the rules for that language, before we can even begin to determine which rules all languages might have in common.

这个简化的例子说明了一个主要问题：在我们甚至可以开始确定所有语言可能有哪些共同规则之前，需要从每种语言中获取大量数据来建立该语言的规则。

Ms. Cuddy knew much about body language as a social scientist. Body language is what the look of our physical self communicates to others. But Professor Cuddy started to wonder what our individual body language says to our individual selves.

作为一名社会科学家，卡迪女士非常了解肢体语言。肢体语言是我们身体自我的表情与他人交流的方式。但 Cuddy 教授开始思考我们个人的肢体语言对我们个人的意义。