submenu items
子菜单项
submenu options
子菜单选项
open submenu
打开子菜单
close submenu
关闭子菜单
submenu structure
子菜单结构
submenu navigation
子菜单导航
nested submenus
嵌套子菜单
submenu selection
子菜单选择
click submenu
点击子菜单
submenu appears
子菜单出现
submenu items
子菜单项
submenu options
子菜单选项
open submenu
打开子菜单
close submenu
关闭子菜单
submenu structure
子菜单结构
submenu navigation
子菜单导航
nested submenus
嵌套子菜单
submenu selection
子菜单选择
click submenu
点击子菜单
submenu appears
子菜单出现
探索常用高频词汇