You use cc when referring to the volume or capacity of something such as the size of a car engine. cc is an abbreviation for (縮略=) 'cubic centimetres'.
例句
...1,500 cc sports cars.1,500立方厘米氣缸的跑車
(用于商業書信的末尾)抄送給，副本呈送
cc is used at the end of a business letter to indicate that a copy is being sent to another person.
例句
...cc J. Chater, S. Cooper.抄送:J.蔡特,S.庫珀
英英詞典釋義
Noun
1. a metric unit of volume equal to one thousandth of a liter