Hydradephaga
水生食肉类
🗣️ 情景例句
How much does a return ticket cost?
返程票多少钱？
Let me treat you.
让我请客。
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，