The sun's arrival in Librabrings the fall equinox.
太阳进入天秤座带来了秋分。
Twice a year, at the Spring and Fall equinox, the Sun rises due east.
一年两次，春分和秋分，太阳从正东方升起。
It was only at two points in the year that the night and the day were of equal length and that was at the spring or fall equinox.
一年之中只有两次，白天和夜晚的长度一样，即春分和秋分。
Day and night would each be exactly 12 hours long on a spring or fall equinox only if the sun were a single point of light and Earth had no atmosphere.
如果想要昼夜在春秋分日达到精确地12小时等长，除非太阳是个单点光源或者地球上没有大气层。
Using the Julian calendar, the spring and fall equinoxes and the seasons were arriving 11 minutes earlier each year. By 1500 the vernal equinox had fallen back to March 11.
根据罗马儒略历，春分、秋分以及四季每年提前11分钟出现，1500年后则提前至3月11日。
The length of day and night may not be equal on the equinox, but that doesn't make the first day of fall any less special.
虽然昼夜等长不会发生在秋分日，但这并不意味着入秋第一日的特殊性会大打折扣。
The season of the year between summer and winter lasting from the autumnal equinox to the winter solstice and from september to december in the northern hemisphere; fall.
秋季指一年中介于夏季和冬季之间的一个季节，自秋分起到冬至止，在北半球是九月至十二月；秋天。
The season of the year between summer and winter, lasting from the autumnal equinox to the winter solstice and from September to December in the Northern Hemisphere; fall.
秋季：指一年中介于夏季和冬季之间的一个季节，自秋分起到冬至止，在北半球是九月至十二月；秋天。
In the Northern Hemisphere they can be seen best in the fall, when the Sun is near the Autumnal Equinox.
在秋天，当太阳在秋分点附近，北半球的人看得最清楚。
The vernal equinox and autumnal equinox herald the beginning of spring and fall, respectively.
春分和秋分，分别预告着春季和秋季的开始。
But, unlike New year of today, Akitu occurred twice a year, usually around the time of both the spring and fall 5 equinox, when day and night are equal in length.
然而，Akitu不像现今的新年庆典，它一年举行两次，通常在昼夜的长短刚好一样的春分和秋分时候进行。
Harvesting comes to one and all when the Autumn Equinox does fall.
秋分来临时候，收获伴随每一个人。
Harvesting comes to one and all when the Autumn Equinox does fall.
秋分来临时候，收获伴随每一个人。
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