名词
中文翻译：本初子午线
同义词：
['prime meridian', 'equator']
例句：
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1.The prime meridian is the line of longitude that passes through the Equator.
本初子午线是穿过赤道的经度线。
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2. The equator is the plane of the Earth's surface that divides it into two hemispheres.
赤道是地球表面的平面，将地球分成两个半球。
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3.The prime meridian is used to determine the direction of longitude on a map.
本初子午线用于确定地图上经度的朝向。