求翻译：李桔元（2002）在《俚语的社会语言学分析》中认为，俚语作为一种极不规范的语言变体，有着悠久历史，并且流行于社会各个阶层之间。他通过剖析俚语的定义以及俚语与其他相似变体的关系，得出结论：俚语在现代社会中发挥着越来越重要的交际功能和社会功能，因此不但不会消失，反而会发展。是什么意思？

Li Jieyuan (2002) think in sociolinguistic analysis of the slang, slang as a very nonstandard language variants, with a long history, and popular in between the various sectors of society. Through his analysis of slang definitions, and slang are similar to other varieties of relationship concluded slang plays an increasingly important in modern society the communicative and social features, so not only will not disappear, but will develop.