tool tip

基本解释

If you hover your mouse cursor over a diagram element, a tool tip from the documentation for that element will pop up.
如果您將鼠標停在一個圖表元素上，那麽就會出現一個工具提示告訴您關於此元素的信息。
If the selection is a file (rather than a folder), then we adjust the text and tool tip to reflect that file name and enable it.
如果選擇是文件（而不是文件夾），則調整文本和工具提示以反映該文件的名稱竝啓用它。
For example, if you decide to display help information as a tool tip rather than in a separate window that would open by user request, the tool tip might not be accessible to screen reader users.
例如，如果您決定將幫助信息作爲工具提示，而不是在由用戶請求打開的單獨的窗口中，工具提示可能對屏幕閲讀器用戶是不具有易訪問性的。

Last but not least, there's a handy Tool Tip to guide users through all the new features.
ENGADGET
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Furthermore, the power-tool market may be only the tip of the iceberg for A123's advanced battery technology.
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