许多商业电子垃圾邮件的发送者有目的地伪装这些邮件的来源。

Many senders of unsolicited commercial electronic mail purposefully disguise the source of such mail.

youdao

许多商业电子垃圾邮件的发送者有目的地伪装这些邮件的来源。

Many senders of unsolicited commercial electronic mail purposefully disguise the source of such mail.

youdao