Metapopulation
集合种群
🗣️ 情景例句
I can learn something
我能学到一些东西。
Better be the head of an ass than the tail of a horse.
宁为驴头，不为马尾。
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，