"To protect our network against computer viruses,our IT Department has issued a ban on any use of e-mail attachments.For further details,please refer to the agttached document."
为了保护我们的网络不受病毒侵害，我们的IT部门对所有的电子邮件附件都进行了限制，需要了解详情请参见本邮件的附件。