button n. 按钮 1、对话框中的一种图形元素。当激活它时，能执行指定的功能。用户可以采用以下方法来激活按钮：用鼠标在其上单击，或者当按钮获得聚焦时按下“Return”或“Enter”键。【英】A graphic element in a dialog box that, when activated,performs a specified function. The user activates a button by clicking on it with a mouse or, if the button has thefocus, by pressing the Return or Enter key. 2、鼠标上的一个活动片，用于激活一些功能。旧式的鼠标模型只有一个按钮；新式一般有两个或更多个按钮。【英】On a mouse, amovable piece that is pressed to activate some function. Older mouse models have only one button; newer modelstypically have two or more.