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。

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

youdao

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。

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

youdao