OAT 使用进度条和其他有用的用户界面消息表示任务的总进度和每个部分的进度。
OAT represents the progress of the task and the progress of each part with progress bars and other helpful user interface messages.
使用类似进度条和加载圈圈的指示器告诉你的用户软件正在运行，提示他们还要等多久。
Use indicators like progress bars and loading wheels to tell your users that the software is working and inform them how long they have to wait.
虽然很多使用Ajax的开发人员都给出了各种各样的文件上载进度条解决方案，但我们还没有听说过哪个是基于portlet的。
While progress bars for file upload have been described by various developers using Ajax, we have yet to discover one that is portlet based.
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