| 单词 | 子午圈 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔semidiurnal〕Of or relating to the arc described by a celestial body between its meridian passage and its points of rising or setting.半日圆拱：天体在其子午圈与升落位置之间描出的圆拱轨迹的或与之相关的美国传统 |
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