WCAG SC 2.1.1指出用户应当能用键盘导航到所有内容和功能。

WCAG SC 2.1.1 says that users should be able to navigate all content and functions using the keyboard.

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很多网站的内容和功能都作为基于REST的服务提供，以便被包含到其他Web应用程序中。

Many web sites make their content and functionality available as RESTful services so that they can be incorporated into other web applications.

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文章通过理念、教育理念与相关概念的比较，分析了哲学教育理念的性质、内容和功能。

The article compares concept, education concept and related concept and analyzes the nature, content and function of philosophical education concept.

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