Especially to Katherine Miller, for being there when I needed her.
特别是感谢凯瑟琳.米勒,每当我需要她时,她总在我身边。
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,