Definition
to include someone in the recipients of an email by sending them a copy you are sending to another person
將某人添加到電子郵件副本收件人名單中
When sending the email to the team, she copied the manager in.
當她將電子郵件發送給團隊時，她將經理添加到副本收件人名單中。
We need to copy the head of the marketing department in this email as well.
我們也需要將市場部主管添加到這封電子郵件的副本收件人名單中。
He copied me in on the report he sent, so I can review it myself.
他將我添加到報告的副本收件人名單中，這樣我就可以自己審查了。