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.
歷史學(xué)家迄今認(rèn)為日歷是隨農(nóng)業(yè)的問世而出現(xiàn)的,因?yàn)楫?dāng)時(shí)人們面臨著了解四季的實(shí)際需要,