二分时刻一天中太阳通过天赤道的两个时刻中的任一时刻，此时昼夜长短几乎相等；春分或秋分

二分时刻一天中太阳通过天赤道的两个时刻中的任一时刻，此时昼夜长短几乎相等；春分或秋分的英文翻译

基本释义

• Either of the two times during a year when the sun crosses the celestial equator and when the length of day and night are approximately equal;the vernal equinox or the autumnal equinox.