The hollow ringing began again in the next room, and as if he were answering it, Ennis picked up the phone on the bedside table, dialed his own number.

隔壁房间那空洞的电话铃再度响起，好像要应答它似的，埃尼斯拿起桌边的电话，拨通了家里的号码。

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XP required users to activate their copy with a 50-number code over the web, or by ringing Microsoft.

XP系统要求用户在网上使用他们的50位激活码激活系统，或者

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A number of alarm bells have started ringing.

许多警钟已经敲响。

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Of course, the warning would have appeared as an image, rather than text embedded in the site, which should have set alarm bells ringing - except that, as soon as news of the warning came out, the website collapsed under the sheer number of people trying to log onto the site.

BBC: Was the 'gunman warning' a hoax?