carbon copy的复数形式怎么写？

She is a carbon copy of her sister.她跟她姐姐长得一模一样。She's a carbon copy of her sister.她跟她姐姐一模一样.It has the plastic seperator for carbon copy checks.它具有塑料的碳副本检查分隔符....

n.复写本，副本...

carbon copy的音标：carbon copy的英式发音音标为：['kɑ:bən 'kɔpi]carbon copy的美式发音音标为：['kɑrbən 'kɑpi]...