名词
中文翻译：极距
同义词：
['polar distance', 'pole-to-pole distance']
例句：
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1. The team needsto calculate the pole distance before they start their journey.
队伍在开始他们的旅程之前需要计算极距。
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2. The polar distance between the two countries is over 5000 kilometers.
两国之间的极距超过5000公里。
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3. The pole distance measurement is crucial for understanding the Earth's rotation.
极距测量对于理解地球旋转至关重要。