2, 3, 4, front. Now we're going to run it off. 2 3 4
前踢。现在, 我们来快跑。
Up to now, historians have assumed that calendars came into being with the advent of agriculture, for then man was faced with a real need to understand something about the seasons.
历史学家迄今认为日历是随农业的问世而出现的,因为当时人们面临着了解四季的实际需要,