这是我国历史上第一部有完整文字记载的历法，在历史上有着极其重要的地位。
This is why the calendar has been called "Taichu calendar". It is the first calendar with complete records in China's history and thus occupies an extremely important status in history.
他写的《古今历法通考》，是我国第一部历学史。
His book, "Ancient and Modern book of General calendar" is the History of China's first calendar.
他写的《古今历法通考》，是我国第一部历学史。
His book, "Ancient and Modern book of General calendar" is the History of China's first calendar.
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