[transitive] (copies, copying, copied, copied)

1. to make another document, computer file, etc. that is the same as the original
   复制◆Copy the CD onto your hard disk.
   将光盘复制到硬盘中。◆illegally copied software
   非法复制软件  ➡  photocopy verb (1)

●ˌcopy sb ˈin (on sth)to make sure that sb receives a copy of a letter, an electronic message, etc. that you are sending to sb else
抄送◆Please copy me in on all correspondence.
请将所有信件抄送给我。