What makes the discovery scientifically important is that it's the first evidence of how fast a quasar can shut down. Click to enlarge this image.

最新资料表明类星体能泯灭，这是一个科学史上的重要发现。点此图片放大。

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Ask us how to do a page walk in advertising, advertising image switch, click on the link after entering not the same?

请教一下，如何做一个页面游动广告，广告图片切换时，点击后进入的连接也不一样？

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