To achieve sub-menus, we embedded another level of UL elements.

为了实现子菜单，我们嵌入另一级UL元素。

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You can click, point, type, pull up menus and sub-menus, and cruise around, with almost no waiting around.

可以单击、选择、输入、打开菜单和子菜单、到处巡游，基本上不需要等待。

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From here, you can reach other sub-menus and their options, with no database selected and no options automatically activated.

从这里可以导航到每个子菜单及其选项，并且不会选择数据库或自动激活选项。

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