Searchable, and clearly laid out, the info in the apps is available offline, unlike other options that link out to external references.
支持离线搜索应用的使用信息，而不像其它的应用那样给你一个外部的链接。
Setting the class combines the image Sprite info from the CSS with the link, showing only that region of the Sprite.
用CSS和链接设置类，将精灵的信息组合起来，只显示精灵的一部分。
Redhill Consulting provides a nice foreign_key_migrations plugin, which adds support for foreign keys within Rails' database migration framework; see Resources for a link to more info.
Redhill Consulting提供了一个很好的foreign_key_migrations插件，它增加了在Rail数据库迁移框架中对外键的支持；有关更多信息，请参看参考资料中的链接。
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