Ichthyocolla
鱼胶
🗣️ 情景例句
and this is an important decision we have to make.
这又是我们必须做的一个重大决定。
I have just finished my homework.
我刚刚做完了作业。[刚刚完成的动作
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，