equinox

n. equal length of day and night昼夜平分时。
△Oth. 2. 3. 129 (123):“and do but see his vice,/’Tis to his virtue a just equinox,/ The one as long as theother. ”i. e. His vice counter-balances his virtue as ex-actly as day and night are equal at the equinox. 但是只消看看他的毛病，那和他的长处恰好相等，半斤对八两。

equinox昼夜平分时

指一年中太阳在午时垂直照射赤道的时间。此时全世界的白天、夜晚时长均分。昼夜平分时一年中出现两次，第一次为3月21日前后（称春分），第二次在9月22日（称秋分）。

equinox[ˈi:kwinɔks]

n. 昼夜平分点