With far less controversy, colleges could send messages about canceled classes, delayed buses, campus crises or just the cafeteria menu.

大学可以发送取消课程、公交车延误、校园危机或仅仅餐厅菜单的信息，而免受太多争议。

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People who cannot talk but can move their eyes have, for some time, been able to compose messages by looking at a menu of letters and common words.

一段时间以来，不能说话的人可以转动他们的眼睛，看着字母或常用词语的菜单来写信息。

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These messages, called events, are interpreted by the program, and allow the program to respond to the user selecting a menu item, clicking on a button, and so on.

这些消息(称为事件)由程序进行解释，并允许程序对用户选择菜单项、单击按钮等操作作出反应。

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The menu structure is easy to pick up on, as is navigating through messages.

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