Now Clark and colleagues have investigated how the cloud could be used to build a botnet, a network of infected computers under an attacker's control.

克拉克和他的同事正在研究云服务是如何用于构建僵尸网络的。僵尸网络是由网络攻击者控制的受感染计算机网络。

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Marcia: But something must be missing if Jonah still feels that you're under a cloud. And just a few questions. Are you sleeping at night?

玛莎：如果乔纳发现你还是闷闷不乐，那肯定是还有什么问题！我想问你几个问题。你晚上睡得着吗？

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That entire period will be under a cloud, no matter what Selig does now to make up for his own willful negligence.

FORBES: Minor League Leader

And judges under a cloud can only be investigated by fellow judges.

BBC: India's activists on warpath against the government

Though Mr Greenberg leaves AIG's helm under a cloud, he will be remembered by many as one of the greatest corporate leaders of recent decades.

ECONOMIST: The end of AIG’s Greenberg era | The