美国英语的历史虽短,但其具有双重特征——保守性和创新性。作者从词汇的角度论述这一特征,并采用大量例证。此特征根源于美国独特的社会环境和语言对社会交际需要的适应。随着时间和文化交流的发展,美国英语已成为国际语言。 Although American English has a short history, it has the dual characteristics of being conservative and innovative. The author discusses this feature from the perspective of vocabulary and uses a large number of examples. This feature is rooted in the unique social environment of the United States and the adaptation of language to the needs of social communication. With the development of time and cultural exchange, American English has become an international language.