Definition
to include someone in the recipients of an email by sending them a copy you are sending to another person
将某人添加到电子邮件副本收件人名单中
When sending the email to the team, she copied the manager in.
当她将电子邮件发送给团队时，她将经理添加到副本收件人名单中。
We need to copy the head of the marketing department in this email as well.
我们也需要将市场部主管添加到这封电子邮件的副本收件人名单中。
He copied me in on the report he sent, so I can review it myself.
他将我添加到报告的副本收件人名单中，这样我就可以自己审查了。