语言是人类区汗动物的最大特征。人类的语言错综复杂，往往难以表情达意，更难以求得绝对的精确。在日常交际中，传递信息的一方往往会出现词不达意或言不尽意的现象。更有甚者，语言在运用过程中，还常常出现歧义。英语语言学家威廉·安普逊说过，歧义是我们必须警惕的敌人。 Language is the most characteristic feature of human sweat animals. Human language is complex, often difficult to express their emotions, more difficult to find the absolute accuracy. In the daily communication, the party who transmits the information often appears the phenomenon of the word is not satisfied or not. What is more, the language in the use of the process, but also often appear ambiguous. William Lingpson, an English linguist, has said that ambiguity is an enemy we must be wary of.