名词
中文翻译：Unknown
同义词：
['Julian calendar', 'Julian year']
例句：
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1.The Julian epoch is the time period when the sun aligns with the constellation of Sirius.
朱利安纪元是太阳与天狼星对齐的时期。
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2. During the Julian epoch, the earth's axis was tilted at a different angle than it is today.
在朱利安纪元，地球的轴倾斜角度与现在不同。
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3. The discovery of the first atomic clock during the Julian epoch revolutionized scientific measurement.
在朱利安纪元发现的第一台原子钟，彻底改变了科学测量的方式。