Sieving test
[化] 筛分试验
🧩 词语组成解析
[计] 筛选\\n[化] 筛分
🗣️ 情景例句
This winter has been a cold one.
目前来看，今年冬天算比较冷的。
How come?
怎么会这样？
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，