| BC | |
| 级别 | 第3级 |
| 音标 | [ ˌbi:'si: ] |
| 解释 | (=before Christ)公元前 |
| 英英释义 | before the Christian era; used following dates before the supposed year Christ was born; |
| 发音 |  |
| 例句 |
1. By 1800 BC, the climate is known to have changed. 在公元前1800年，据说气候已经改变。 2. In 221 BC, there was a poor scholar in Shanxi Province. 公元前221年，山西有一位穷书生。 |
