您拥有在操作本地文件时能很好地工作的浏览器、备份实用程序、安全性扫描程序或版本控制系统吗？
Do you have a browser or backup utility or security scanner or version-control system that serves you well when it operates on local files?
但这并不能真正工作，因为告诉浏览器的间隔仅仅是一个建议。
But that doesn't really work, because the interval that you tell the browser is just a suggestion.
它可以完全工作在浏览器内部(当前支持Firefox、IE和Safari)，是一个简单实用的解决方案。
It works totally within your web browser (currently Firefox, Internet Explorer, and Safari), and is an easy and useful solution.
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