E-mail worms may cause the spread of Internet spam and threaten the security of Internet.

电子邮件蠕虫是引起因特网中垃圾邮件泛滥的原因之一，严重威胁着因特网。

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E-mail worms may cause the spread of Internet spam and threaten the security of Internet.

电子邮件蠕虫是引起因特网中垃圾邮件泛滥的原因之一，严重威胁着因特网。

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