abbreviation for cubic centimetre立方厘米(cubic centimetre的缩写)
abbreviation forcarbon copy (DOCUMENT) : written at the end of a business letter or in an email before the names of the people who will receive a copy副本;复写本(carbon copy的缩写)
to send a copy of a business letter or an email to someone抄送(商业信件或电子邮件)
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