Arcus volaris venosus profundus
[医] 掌深静脉弓
🧩 词语组成解析
[医] 弓
[医]静脉的
[医]深的
🗣️ 情景例句
We need a new coffee-table book,
我们需要一本可以摆在客厅的书，
You were lucky to find it.
你的运气真好。
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，