（雌性動物的）動情，動情周期大多數哺乳動物（包括人類）的雌性產生的周期性的性衝動，在此期間內雌性具有排卵的優勢，所以該期間最適合 * ；刺激The periodic state of sexual excitement in the female of most mammals, excluding human beings, that immediately precedes ovulation and during which the female is most receptive to mating; heat.