carbon copy

ریشه

The term 'carbon copy' originated from the use of carbon paper, which was coated with carbon or ink on one side and used to make copies by placing it between two sheets of paper.

مثال

• Please make a carbon copy of the report for your records.
• She sent a carbon copy of the email to her supervisor.
• In the past, carbon copies were commonly used before the advent of photocopiers.