因地球公转引起的、以一年为周期的天体视运动。
“二十四节气”是中国人通过观察太阳周年运动，认知一年中时令、气候、物候等方面变化规律所形成的知识体系和社会实践。
China's '24 solar terms' is a knowledge system and social practice formed through observations of the sun's annual motion, and cognition of the year's changes in season, climate and phenology.
中国的二十四节气是一种知识体系和社会实践习惯，通过观察太阳的周年运动，以及认识一年在季节、气候和物候方面的变化而形成。
China's '24 solar terms' is a knowledge system and social practice formed through observations of the sun's annual motion, and cognition of the year's changes in season, climate and phenology.
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