equinox - Definition & Meaning

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复数形式

equinoxes

分点, 春分点或秋分点

(astronomy) either of the two celestial points at which the celestial equator intersects the ecliptic

同义词：

分点, 昼夜平分点

either of the two moments in a year when the Sun, in its apparent motion along the ecliptic, crosses the celestial equator, resulting in approximately equal periods of daylight and darkness worldwide

The spring equinox marks the beginning of spring in the Northern Hemisphere.
春分标志着北半球春天的开始。
During the autumn equinox, the length of day and night are nearly equal.
在秋分期间，白天和黑夜的长度几乎相等。
The equinox occurs twice a year, once in March and once in September.
春分一年发生两次，一次在三月，一次在九月。
On the equinox, the Sun rises due east and sets due west.
在春分或秋分时，太阳正东升起，正西落下。
The equinoxes are important for astronomers studying the Earth's tilt and orbit.
分点对于研究地球倾斜和轨道的天文学家来说很重要。