慢慢将移动鼠标移过工具栏上的图标，工具提示会告诉你每个按钮的功能。
Move the cursor slowly over the ICONS, and a tooltip tells you what function each button performs.
我看他的头顶根本就没有叹号，而且鼠标移过去也没有能对话的泡泡出现，这是怎么回事？
I think he's head simply not an exclamation point, and the mouse moved over there is no dialogue bubbles can occur, how is this going?
如果你不喜欢在你的Gmail消息中看到标签但不介意在鼠标移过它们的时候可以看到，就能做出修改。
If you don't like seeing labels on your Gmail messages, but wouldn't mind seeing them when your pointer hovers over them, there's a fix.
明确标示每个链接的目标。保持导航结构和命名的可见性，而不要隐藏它们，不要直到用户触发一个事件(比如鼠标移过)才显示。
Clearly indicate each link's destination. Keep navigation structures and nomenclature visible, rather than hiding them until the user has triggered an event (such as a mouse over).
另一个拖动处理程序highlighting_drag_handler负责突出显示鼠标移过的那些可切换元素，以显示可以进行元素拖动的地方。
The other drag handler, highlighting_drag_handler, is responsible for highlighting the swappable elements over which the cursor passes to show where you are permitted to drag the element.
当鼠标指针移过小部件的标题栏时，将会显示一个向下箭头图标。
When you fly over the title bar for the widget, a downward arrow icon will appear.
当鼠标指针移过小部件的标题栏时，将会显示一个向下箭头图标。
When you fly over the title bar for the widget, a downward arrow icon will appear.
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