名词
中文翻译：本初子午线
同义词：
['prime vertical', 'prime vertical meridian', 'prime vertical meridian line']
例句：
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1. The prime meridian is the line that bisects the Earth's surface at noon.
本初子午线是地球表面在中午时将地球分为两半的线。
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2.The prime meridian is also known as the Prime Vertical Meridian.
本初子午线也被称为主垂直子午线。
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3. The prime meridian is important for navigation and timekeeping.
本初子午线对于导航和时间计量非常重要。