名词
中文翻译：太阳历
同义词：
['solar year', 'solar calendar', 'solar timepiece']
例句：
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1.The solar calendar is used to calculate the length of the day and night.
太阳历用于计算白天和夜晚的长度。
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2.The solar calendar is based on the sun's movement around the earth.
太阳历是基于太阳绕地球运动而制定的。
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3. The solar calendar is used in many countries to determine the date of holidays and festivals.
太阳历被许多国家用来确定节假日和节日的日期。