在容器内管理键盘焦点。

Manages keyboard focus within the container.

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例如，在现实的应用程序中，处理键盘事件(例如，Ctrl + A)以及管理与处理大型选择列表有关的问题是有意义的。

For example, in a real-world application it makes sense to handle keyboard events, such as Ctrl + a, and also manage issues around handling a large selection list.

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Twibble Desktop： Twibble能让用户管理多达3个不同的Twitter帐号，同时支持键盘快捷键，位置识别和查看选项。

Twibble Desktop: Twibble allows users to manage up to 3 different Twitter accounts, and includes keyboard shortcuts, location awareness, and viewing options.

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