Blind carbon copy (used as an indication that a duplicate has been or should be sent to another person without the knowledge of the main recipient).
Blind carbon copy, a copy of an email sent to someone whose name and address isn't visible to other recipients.
英汉双解词典包含464360条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。