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万能钥匙

[url]http://www.youtube.com/watch?v=7Uv45y6vkcQ&eurl=http%3A%2F%2Fwww%2Emakezine%2Ecom%2Fblog%2Farchive%2F2006%2F08%2Fbump%5Fkeying%2Ehtml[/url]