"Please check the attached file" 是请查收附件的常用表达。
来源：这是一个英语习惯用语，常见于电子邮件、办公软件等场合，用于提醒收件人注意附带的文件。
例句：
"Please find the attached report for your review."
(请查收附件的报告以便您审阅。)
"I've attached the budget proposal to this email. Could you take a look?"
(我已将预算建议附加到此电子邮件中。您可以看一下吗？)
"Don't forget to check the attached files before our meeting tomorrow."
(在明天的会议之前，请不要忘记查看附件。)