相关单词近義詞 B.C. 公元前（=before ..., before christ 公元前臨近詞BCG, BBS, BCF, BCO, BCI, BCM, BCR, BCT, BCA, bcp, BCW, BCC相似詞BB gun, BBC English, BBQ, BBS, bcc, BCE, bcnu, be, 返回 BC