These two times of year are aptly, if a tad confusingly, called the equilux, or " equal light." Incidentally, did you know that a complete cycle of one day and night is called a nychthemeron?
一年中的这两个时间被恰当地称为“等光”，虽然有点令人困惑，但也很恰当。顺便说一句，您知道一天一夜的完整周期称为“nychthemeron”吗？