Xanthine
n. 黄质, 黄嘌呤\\n[化] 黄嘌呤
🗣️ 情景例句
I see your point you mean.
我懂你的意思。
I hadn't planned on swimming across the whole lake.
我可从没计划要游过整个湖。
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，