1. Hold down the ALT key to drag a toolbar or menu item without displaying the Customize dialog box. 按住alt键可以在不显示“自定义”对话框的情况下拖动工具栏或菜单项。
2. However, the appropriate ALT threshold value to use for detecting liver disease in children is unknown. 然而，还不知道用来检测肝病的合适的谷丙转氨酶的临界值。
3. Alt+spacebar Open the window menu for the currently selected window. The window menu allows you to perform actions on the window, such as minimizing, moving between workspaces, and closing. 打开窗口项目单为现在选择窗口。窗口项目单允许你完成动作在窗口。例如最小化，移动在工作空间之间，和关闭。
英英解释
n.
1. angular distance above the horizon (especially of a celestial object)
