基本解释（在电子邮件或网上聊天室里使用）再见（be seeing you的缩写）。同根派生 bcnu相关词英英字典剑桥英英字典 written abbreviation for be seeing you: a way of saying goodbye at the end of an email or when leaving a discussion in an internet chat roombcnu剑桥字典bcnu柯林斯字典