A great example of this is copy and paste, which can be found in the edit dropdown menu of word processors, and is also triggered with keyboard shortcuts.

一个很好的例子是复制和粘贴，它可以在文字处理器的编辑下拉菜单中找到，也可以通过键盘快捷键触发。

This is exactly what’s happening behind the scenes when you press the little bold button in a text editor, or select shutdown from a dropdown menu – a function linked to that event is firing.

当您在文本编辑器中按下粗体小按钮，或从下拉菜单中选择关闭时，这正是幕后发生的事情——与该事件相关联的功能正在触发。