名词
中文翻译：极星
同义词：
['Polaris', 'North Star例句：1. The Pole Star is a natural wonder that guides ships at sea.（北极星是自然界的奇观，指引着航行中的船只。）']
例句：
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1. The Pole Star is a natural wonder that guides ships at sea.
北极星是自然界的奇观，指引着航行中的船只。
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2.The Pole Star is often used as a reference point for navigation.
北极星经常被用作导航的参考点。
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3. The Pole Star is also known as the North Star because it is located in the northern hemisphere.
北极星也被称为北星，因为它位于北半球。