中文翻译与英英解释 | 本初子午线。
| | | prime: 短语和例子 prime2 vt. 1.(旧时)为…装雷管 ... | | meridian: n. 1.【天文学】子午圈[线]；正午。 2.顶点，绝顶 ... | |
| meridian at zero degree longitude from which east and west are reckoned (usually the Greenwich longitude in England)
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| A prime meridian is a meridian, i.e. |
例句与用法 | 1. | Lines of longitude are measured in degrees east or west of the prime meridian , which runs through greenwich in london , while lines of latitude are given in degrees north of south of the equator
穿过伦敦格林尼治的经线叫做本初子午线（ 0度经线） ，经度以东西距离这条经线多少度来计算，而纬度以离赤道南北多少度来计算。
| | 2. | The prime meridian , which runs through greenwich in south - east london , became the basis for the world ' s time keeping in 1884 after the first astronomer royal , john flamstead , calculated that the earth rotated on its axis once every 24 hours
1884年，首位皇家天文学家约翰法兰姆斯坦算出地球每隔24小时绕轴自转1次，使得通过伦敦东南格林威治的本初子午线成为全球计时基准。
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