想像你乘坐一艘快艇在湖中飞驰，快艇以自动导航器操作，正朝东方前进；
Imagine riding in a speedboat on a lake with an automatic pilot set to go east.
这些组件不支持对导航器执行拖拽并将鼠标悬停在上方的跨页面拖放操作。
Drag-and-drop action across pages by dragging and hovering over the navigator is not supported by these components.
多个页面间支持拖放操作，即如果在导航器中拖动一个页面并悬浮在另一页面上时，可将其放到该页面上。
Drag-and-drop is supported across multiple pages; that is, if you drag one page and hover over another page in the navigator, you can drop on to that page.
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