In order to study the effect of Sun on climate change and earthquake eruption, it is necessary to know the parameters of solar variations.
为了研究太阳活动对气候变化、地震爆发中起到的作用，就必须先认识太阳长期活动的变化参量。
In order to study the effect of Sun on climate change and earthquake eruption, it is necessary to know the parameters of solar variations.
为了研究太阳活动对气候变化、地震爆发中起到的作用，就必须先认识太阳长期活动的变化参量。
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