例如：一个PR值为1的网站表明这个网站不太具有流行度，而PR值为7到10则表明这个网站非常受欢迎（或者说极其重要）。一般PR值达到4，就算是一个不错的网站了。Google把自己的网站的PR值定到9，这说明Google这个网站是非常受欢迎的，也可以说这个网站非常重要。
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/etc/nginx/nginx.conf.根据多重谣传，在即将推出的iPhone 7上苹果将会取消标准的3.5mm耳机端口，转而使用Lightning端口以便于打...
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