配合标签来展示二级导航。
Use to present the second-highest-level navigation options when used with TAB sets.
这儿收藏了表单设计、登录界面、二级导航、按钮等资源。
You'll find collections of Forms, Login, Subnavigation, Buttons, among other design patterns.
许多公司两种都用，所有页面都采用一级导航条，并特定部分加上二级导航条。
Some companies use both - a global top navigation on all pages and a secondary navigation bar for specific site sections.
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