The language of everyday life was evolving in Europe and at a certain point in the middle ages it was really only merchants, aristocrats and clergy who could deal with Latin.

在欧洲，日常生活的语言在不断演变。在中世纪的某个时期，真的只有商人、贵族和神职人员才会使用拉丁语。

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In contemporary, outdoor slogans affects not only the language of everyday life, also influence people's consciousness and behavior, is an important propagation.

在当代，户外标语口号不仅影响着人们日常的语言生活，也影响着人们意识和行为，是中国一种重要的传播现象。

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Yet it is precisely this deceptive ease which makes language a victim of its own success, since in everyday life its triumphs are usually taken for granted.

然而，正是这种欺骗性的轻松使语言成为自身成功的牺牲品，因为在日常生活中，语言的成功通常被视为理所当然。

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And this is obviously a toy example but you could see the use of recursion in everyday life and in everyday use of language.

这只是个小例子,但在日常生活和日常用语中,递归的应用极为广泛

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But whatever tricks or technology are used, the only test of a language's viability is everyday life.

ECONOMIST: Endangered languages