B.C.
abbreviation of Before Christ, in chronology, attested by 1823. The phrase itself, Before Christ, in dating, with exact years, is in use by 1660s.
| 词汇 | B.C. |
| 词根词缀 | Online Etymology Dictionary B.C. abbreviation of Before Christ, in chronology, attested by 1823. The phrase itself, Before Christ, in dating, with exact years, is in use by 1660s. |
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