◎ 初伏 chūfú
(1) [the first day of the first period of the hot season]∶夏至后的第三个庚日,是三伏中头伏的第一天
(2) [the first day of the three ten-day periods of the hot season]∶通常也指从夏至后的第三个庚日起至第四个庚日前一天的一段时间。也叫“头伏”