n.春分，二分时刻，昼夜平分时，秋分

原形：equinox复数：equinoxes

The equinox occurs twice a year, when the sun is directly above the equator.
春分和秋分每年发生两次，此时太阳位于赤道正上方。
On the equinox, day and night are of equal length all around the world.
在春分和秋分时，全球各地白天和黑夜几乎等长。
The equinox marks the changing of the seasons from winter to spring in the Northern Hemisphere.
在北半球，春分标志着从冬季过渡到春季。
Farmers often celebrate the equinox as a time for planting and harvesting crops.
农民常常在春分和秋分时节庆祝播种和收获作物。
During the equinox, the tilt of the Earth's axis neither points towards nor away from the sun.
在春分和秋分时，地球轴线既不朝向太阳也不远离太阳。
Ancient civilizations believed that the equinox was a time of balance and阴阳调和.
古代文明认为春分和秋分是平衡与阴阳和谐的时刻。
Astronomers use the equinox as a reference point for celestial navigation and observing astronomical events.
天文学家利用春分和秋分作为天体导航和观测天文现象的参考点。
The equinox is a key moment in astrology, representing a time of new beginnings and personal growth.
在占星学中，春分和秋分象征着新的开始和个人成长的重要时刻。
Many cultures hold rituals or festivals around the equinox, such as the Mayan equinox ceremony in Mexico.
许多文化会在春分和秋分举行仪式或节日，如墨西哥的玛雅春分庆典。
The equinoxes are scientifically significant because they mark the exact moment when the Sun's declination is zero degrees.
春分和秋分在科学上具有重要意义，因为它们标志着太阳赤纬为零度的时刻。