从语音、词汇、语法等方面分析美国俚语的两大特点及语用功能，可了解丰富多彩的美国语言文化与社会文化。

This essay analyzes the two characteristics of American slang and its model function and helps to understand the American language and culture.

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本文主要介绍了美国俚语的特点、构成以及它的历史、现状和发展趋势。

This paper mainly discusses the characteristic, structure, as well as its history, present situation, and general trend.

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