例如，一个繁忙中的程序时常在它的主窗口上显示沙漏时钟，以给用户一个你应当等待的可视化提示。
For example, a busy application would often display a sand clock over its main window, to give the user a visual hint that they should wait.
例如，一个繁忙中的程序时常在它的主窗口上显示沙漏时钟，以给用户一个你应当等待的可视化提示。
For example, a busy application would often display a sand clock over its main window, to give the user a visual hint that they should wait.
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