The article explores the perplexing outcomes of comparative research projects in London and Paris on language change in multilingual areas of the cities populated by large numbers of recent immigrants with very diverse language backgrounds. In London, as in many other northern European cities, language contact on such a large scale has resulted in the emergence of a “multiethnolect”: a repertoire of innovative linguistic forms used by young people of all ethnicities, including monolingual non‐immigrant speakers. In Paris, however, there was no such repertoire. I propose four factors that are necessary for a multiethnolect to emerge and that explain why similar processes of population movement, immigration, and globalization have produced such different linguistic outcomes in London and Paris. These factors remind us that language evolution, like language use, is constrained not only by the social characteristics of individuals but also by the socio‐cultural historical contexts in which individuals live.

中文翻译：

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从更长远的角度来看：解释多元文化的伦敦英语和多元文化的巴黎法语

这篇文章探讨了伦敦和巴黎的比较研究项目的令人困惑的结果，这些研究项目涉及许多语言背景各异的新移民，这些城市的多语种地区的语言变化。在伦敦，就像在许多其他北欧城市中一样，如此大规模的语言接触导致了“多民族”的出现：所有族裔的年轻人，包括讲非英语的非移民说话者，都使用了创新的语言形式。但是，在巴黎，没有这样的曲目。我提出了多民族主义者涌现所必需的四个因素，并解释了为什么人口流动，移民和全球化的相似过程在伦敦和巴黎产生了如此不同的语言结果。这些因素提醒我们，语言的发展，