名词
中文翻译：地磁极性纪元
同义词：
['geomagnetic epoch']
例句：
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1.The geomagnetic polarity epoch is a crucial period in the history of the Earth's magnetic field.
地磁极性纪元是地球磁场历史中一个至关重要的时期。
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2. During this epoch, scientists were able to study the effects of the sun on the Earth's magnetic field.
在这个纪元期间，科学家们能够研究太阳对地球磁场的影响。
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3. The geomagnetic polarity epoch has been instrumental in understanding the behavior of the Earth's magnetic field.
地磁极性纪元在理解地球磁场的行为方面起到了关键作用。