某些时候动态HTML页面需要即时从服务器更新以备随时显示-甚至是使用后退按钮的时候.例如 显示银行帐号的状态或在线订单.
Sometimes dynamic HTML pages need to be fetched from the server whenever they are displayed - even when the back button is used. For example, pages showing the state of a bank account or online order.
其中一种“多帐号”智能信用卡在其表面上有两个按钮，每个按钮拥有一个指示灯，你一按就能够将帐号数据记录到它的磁条上。
The "MultiAccount" card has two buttons on its face, each with an indicator light that can be pressed to record data to its magnetic strip.
因为你将看不到所谓的视频，而且在点击YouTube的播放按钮之后，会有一个第三方的Twitter流氓程序跳出来要求你赋予访问你帐号的权限。
There is no video, and clicking the YouTube play button will take you instead to a rogue third-party Twitter application that asks permission to access your account.
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