"Please refer to the attachment."
This phrase comes from the practice of sending email attachments in electronic communication. An attachment refers to a file that is attached to an email message, often in order to provide additional information or supporting documents related to the email's content.
Example in Engpsh:
"Could you take a look at the attached file for more information?"
"I've included my resume in the attachment for your review."
中文翻译：
"请看附件。"
"我把我的简历附在了邮件里，请你查看。"