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随着垃圾邮件发送者运用更先进的技术来隐藏踪迹,垃圾邮件变得更加狡猾、更有针对性。这是由于垃圾邮件发送者采用了更先进的技术来隐藏自己。
As spammers use more sophisticated techniques to hide traces, spam becomes more cunning and targeted. This is because spammers use more advanced techniques to hide themselves.